Re: Build Docker Image from a Dockerized Jenkins

[Jacob Larsen]

On 2017-12-05 09:03, nicolas de loof wrote:



2017-12-04 21:38 GMT+01:00 Jacob Larsen >:


Here is a list of the options I know, but one important aspect to
this is if you use pipeline or not in your builds as that affects
your choices:

Docker Custom Build Environment Plugin. This will use an existing
executor to launch a container with the build. The images used
need not be aware of Jenkins or dependencies. When I looked at it,
it seemed abandoned, but it looks like someone is trying to pick
it up again. It will probably take some time before it is up to
date with new docker and Jenkins features. E.g. last I checked,
pipeline was not supported. Also, it only works from physical
Jenkins nodes.

pipeline is not supported by this plugin as the exact equivalent (even 
code is a re-implementation) is docker-pipeline's "inside".


Yes I just discovered this plugin myself. Not sure how I missed it.


Docker Slaves Plugin. This will provision slave containers on the
fly from a single Docker host. Images need not be aware of Jenkins
or dependencies. Limit on containers launched did not work for
pipeline jobs last I checked. Also, this only works on a single
Docker host.

docker-slaves-plugin do NOT require image to be aware of Jenkins or 
dependencies, you can use arbitrary docker image, even without a JDK. 
This was one initial goal of this plugin.


I hope that was what I wrote too. An important feature IMO.

For myself I am moving towards a setup where the docker run is handled 
by the build logic in the workspace and not by the automation 
tool/jenkins plugins. I hope this can let development builds get closer 
to the automated ones.
This involves a one-shot docker run wrapper of some sorts instead of 
Jenkins plugins. Still investigating though.




Docker Pipeline Plugin https://plugins.jenkins.io/docker-workflow
. I just learned about
this one from the previous message, but looking at the adoption
rate, this must be the mainstream option. Odds are this would be
your best bet to start, provided you are using pipeline.

Using a build wrapper like SCUBA:
https://github.com/JonathonReinhart/scuba
 in a shell step. This
has the benefit of enabling manual/development builds to use the
same steps as the automated Jenkins builds. For that particular
wrapper, it does not support running from inside a container and
creating sibling containers. I am considering a PR for that, but I
think there are other wrappers that might support something like this.

There are plugins that dynamically provision slaves from images
and run builds on those. The common drawback for these would be
that the images themselves must support running a jenkins Slave,
e.g. have a Java runtime of a certain version installed.

/Jacob


On 2017-12-04 17:37, Jeeva Chelladhurai wrote:

I would like to run my builds inside docker, so that I can manage
different run times like node, python, go thru docker images.

- Jeeva

On Mon, Dec 4, 2017 at 5:51 PM, nicolas de loof
> wrote:

(another) plugin of mines.
Same design as docker-pipeline's "docker.inside"

Can you please describe your use-case so we give better advise ?

if you just want to "build Docker images" as your initial
message told, then just run "docker build" within your job,
what else ?

2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai
>:

Any  thoughts on

https://wiki.jenkins.io/display/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin



On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai
> wrote:



I have not tried this, so, cannot vouch for this.
Please be cautious about the approach presented
in this blog.

http://niels.nu/blog/2017/continuous-blog-delivery-p2.html

: you might be interested in Docker-in-Docker.


Thanks for the suggestion.. Docker-in-Docker is been
discouraged here is good read on it

https://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/



- Jeeva




-- 
Jeeva K S Chelladhurai


-- 
You received this message because you 

Re: Build Docker Image from a Dockerized Jenkins

[nicolas de loof]

2017-12-04 21:38 GMT+01:00 Jacob Larsen :

> Here is a list of the options I know, but one important aspect to this is
> if you use pipeline or not in your builds as that affects your choices:
>
> Docker Custom Build Environment Plugin. This will use an existing executor
> to launch a container with the build. The images used need not be aware of
> Jenkins or dependencies. When I looked at it, it seemed abandoned, but it
> looks like someone is trying to pick it up again. It will probably take
> some time before it is up to date with new docker and Jenkins features.
> E.g. last I checked, pipeline was not supported. Also, it only works from
> physical Jenkins nodes.
>
pipeline is not supported by this plugin as the exact equivalent (even code
is a re-implementation) is docker-pipeline's "inside".


> Docker Slaves Plugin. This will provision slave containers on the fly from
> a single Docker host. Images need not be aware of Jenkins or dependencies.
> Limit on containers launched did not work for pipeline jobs last I checked.
> Also, this only works on a single Docker host.
>
docker-slaves-plugin do NOT require image to be aware of Jenkins or
dependencies, you can use arbitrary docker image, even without a JDK. This
was one initial goal of this plugin.

Docker Pipeline Plugin https://plugins.jenkins.io/docker-workflow. I just
> learned about this one from the previous message, but looking at the
> adoption rate, this must be the mainstream option. Odds are this would be
> your best bet to start, provided you are using pipeline.
>
> Using a build wrapper like SCUBA: https://github.com/
> JonathonReinhart/scuba in a shell step. This has the benefit of enabling
> manual/development builds to use the same steps as the automated Jenkins
> builds. For that particular wrapper, it does not support running from
> inside a container and creating sibling containers. I am considering a PR
> for that, but I think there are other wrappers that might support something
> like this.
>
> There are plugins that dynamically provision slaves from images and run
> builds on those. The common drawback for these would be that the images
> themselves must support running a jenkins Slave, e.g. have a Java runtime
> of a certain version installed.
>
> /Jacob
>
> On 2017-12-04 17:37, Jeeva Chelladhurai wrote:
>
> I would like to run my builds inside docker, so that I can manage
> different run times like node, python, go thru docker images.
>
> - Jeeva
>
> On Mon, Dec 4, 2017 at 5:51 PM, nicolas de loof 
> wrote:
>
>> (another) plugin of mines.
>> Same design as docker-pipeline's "docker.inside"
>>
>> Can you please describe your use-case so we give better advise ?
>>
>> if you just want to "build Docker images" as your initial message told,
>> then just run "docker build" within your job, what else ?
>>
>> 2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai :
>>
>>> Any  thoughts on https://wiki.jenkins.io/displa
>>> y/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin
>>>
>>> On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai 
>>> wrote:
>>>


> I have not tried this, so, cannot vouch for this. Please be cautious
> about the approach presented in this blog.
>
> http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you
> might be interested in Docker-in-Docker.
>
>
> Thanks for the suggestion.. Docker-in-Docker is been discouraged here
 is good read on it https://jpetazzo.github.io/
 2015/09/03/do-not-use-docker-in-docker-for-ci/

 - Jeeva

>>>
>>>
>>>
>>> --
>>> Jeeva K S Chelladhurai
>>>
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>>> 
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>>>
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>> .
>>
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> 

Re: Build Docker Image from a Dockerized Jenkins

[Jacob Larsen]

Here is a list of the options I know, but one important aspect to this 
is if you use pipeline or not in your builds as that affects your choices:


Docker Custom Build Environment Plugin. This will use an existing 
executor to launch a container with the build. The images used need not 
be aware of Jenkins or dependencies. When I looked at it, it seemed 
abandoned, but it looks like someone is trying to pick it up again. It 
will probably take some time before it is up to date with new docker and 
Jenkins features. E.g. last I checked, pipeline was not supported. Also, 
it only works from physical Jenkins nodes.


Docker Slaves Plugin. This will provision slave containers on the fly 
from a single Docker host. Images need not be aware of Jenkins or 
dependencies. Limit on containers launched did not work for pipeline 
jobs last I checked. Also, this only works on a single Docker host.


Docker Pipeline Plugin https://plugins.jenkins.io/docker-workflow. I 
just learned about this one from the previous message, but looking at 
the adoption rate, this must be the mainstream option. Odds are this 
would be your best bet to start, provided you are using pipeline.


Using a build wrapper like SCUBA: 
https://github.com/JonathonReinhart/scuba in a shell step. This has the 
benefit of enabling manual/development builds to use the same steps as 
the automated Jenkins builds. For that particular wrapper, it does not 
support running from inside a container and creating sibling containers. 
I am considering a PR for that, but I think there are other wrappers 
that might support something like this.


There are plugins that dynamically provision slaves from images and run 
builds on those. The common drawback for these would be that the images 
themselves must support running a jenkins Slave, e.g. have a Java 
runtime of a certain version installed.


/Jacob


On 2017-12-04 17:37, Jeeva Chelladhurai wrote:
I would like to run my builds inside docker, so that I can manage 
different run times like node, python, go thru docker images.


- Jeeva

On Mon, Dec 4, 2017 at 5:51 PM, nicolas de loof 
> wrote:


(another) plugin of mines.
Same design as docker-pipeline's "docker.inside"

Can you please describe your use-case so we give better advise ?

if you just want to "build Docker images" as your initial message
told, then just run "docker build" within your job, what else ?

2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai >:

Any  thoughts on

https://wiki.jenkins.io/display/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin



On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai
> wrote:



I have not tried this, so, cannot vouch for this.
Please be cautious about the approach presented in
this blog.

http://niels.nu/blog/2017/continuous-blog-delivery-p2.html

: you might be interested in Docker-in-Docker.


Thanks for the suggestion.. Docker-in-Docker is been
discouraged here is good read on it

https://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/



- Jeeva




-- 
Jeeva K S Chelladhurai


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Re: Build Docker Image from a Dockerized Jenkins

[nicolas de loof]

ok, so for this purpose you can rely on docker-plugin to create agents
on-demand from configured docker images, or docker-slaves-plugin if you
want this configured directly within your jobs, and docker-pipeline
"inside" if you prefer Jenkinsfiles to setup CI/CD in jenkins.

2017-12-04 17:37 GMT+01:00 Jeeva Chelladhurai :

> I would like to run my builds inside docker, so that I can manage
> different run times like node, python, go thru docker images.
>
> - Jeeva
>
> On Mon, Dec 4, 2017 at 5:51 PM, nicolas de loof 
> wrote:
>
>> (another) plugin of mines.
>> Same design as docker-pipeline's "docker.inside"
>>
>> Can you please describe your use-case so we give better advise ?
>>
>> if you just want to "build Docker images" as your initial message told,
>> then just run "docker build" within your job, what else ?
>>
>> 2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai :
>>
>>> Any  thoughts on https://wiki.jenkins.io/displa
>>> y/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin
>>>
>>> On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai 
>>> wrote:
>>>


> I have not tried this, so, cannot vouch for this. Please be cautious
> about the approach presented in this blog.
>
> http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you
> might be interested in Docker-in-Docker.
>
>
> Thanks for the suggestion.. Docker-in-Docker is been discouraged here
 is good read on it https://jpetazzo.github.io/
 2015/09/03/do-not-use-docker-in-docker-for-ci/

 - Jeeva

>>>
>>>
>>>
>>> --
>>> Jeeva K S Chelladhurai
>>>
>>> --
>>> You received this message because you are subscribed to the Google
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>>> 9w88K6af0QA%40mail.gmail.com
>>> 
>>> .
>>>
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>
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>> 
>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>
>
> --
> Jeeva K S Chelladhurai
>
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Re: Build Docker Image from a Dockerized Jenkins

[Jeeva Chelladhurai]

I would like to run my builds inside docker, so that I can manage different
run times like node, python, go thru docker images.

- Jeeva

On Mon, Dec 4, 2017 at 5:51 PM, nicolas de loof 
wrote:

> (another) plugin of mines.
> Same design as docker-pipeline's "docker.inside"
>
> Can you please describe your use-case so we give better advise ?
>
> if you just want to "build Docker images" as your initial message told,
> then just run "docker build" within your job, what else ?
>
> 2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai :
>
>> Any  thoughts on https://wiki.jenkins.io/displa
>> y/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin
>>
>> On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai 
>> wrote:
>>
>>>
>>>
 I have not tried this, so, cannot vouch for this. Please be cautious
 about the approach presented in this blog.

 http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you might
 be interested in Docker-in-Docker.


 Thanks for the suggestion.. Docker-in-Docker is been discouraged here
>>> is good read on it https://jpetazzo.github.io/
>>> 2015/09/03/do-not-use-docker-in-docker-for-ci/
>>>
>>> - Jeeva
>>>
>>
>>
>>
>> --
>> Jeeva K S Chelladhurai
>>
>> --
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>> 9w88K6af0QA%40mail.gmail.com
>> 
>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
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> 
> .
>
> For more options, visit https://groups.google.com/d/optout.
>



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Re: Build Docker Image from a Dockerized Jenkins

[nicolas de loof]

(another) plugin of mines.
Same design as docker-pipeline's "docker.inside"

Can you please describe your use-case so we give better advise ?

if you just want to "build Docker images" as your initial message told,
then just run "docker build" within your job, what else ?

2017-12-04 13:15 GMT+01:00 Jeeva Chelladhurai :

> Any  thoughts on https://wiki.jenkins.io/display/JENKINS/CloudBees+
> Docker+Custom+Build+Environment+Plugin
>
> On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai 
> wrote:
>
>>
>>
>>> I have not tried this, so, cannot vouch for this. Please be cautious
>>> about the approach presented in this blog.
>>>
>>> http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you might
>>> be interested in Docker-in-Docker.
>>>
>>>
>>> Thanks for the suggestion.. Docker-in-Docker is been discouraged here is
>> good read on it https://jpetazzo.github.io/2015/09/03/do-not-use-docker-i
>> n-docker-for-ci/
>>
>> - Jeeva
>>
>
>
>
> --
> Jeeva K S Chelladhurai
>
> --
> You received this message because you are subscribed to the Google Groups
> "Jenkins Users" group.
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> email to jenkinsci-users+unsubscr...@googlegroups.com.
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> msgid/jenkinsci-users/CAK5CbZVSDwjOAUe_uB_u89GRufSrbk2MyeUzSHz9w88K6af0Q
> A%40mail.gmail.com
> 
> .
>
> For more options, visit https://groups.google.com/d/optout.
>

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Re: Build Docker Image from a Dockerized Jenkins

[Jeeva Chelladhurai]

Any  thoughts on
https://wiki.jenkins.io/display/JENKINS/CloudBees+Docker+Custom+Build+Environment+Plugin

On Mon, Dec 4, 2017 at 12:04 PM, Jeeva Chelladhurai 
wrote:

>
>
>> I have not tried this, so, cannot vouch for this. Please be cautious
>> about the approach presented in this blog.
>>
>> http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you might
>> be interested in Docker-in-Docker.
>>
>>
>> Thanks for the suggestion.. Docker-in-Docker is been discouraged here is
> good read on it https://jpetazzo.github.io/2015/09/03/do-not-use-docker-
> in-docker-for-ci/
>
> - Jeeva
>



-- 
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Re: Build Docker Image from a Dockerized Jenkins

[Jeeva Chelladhurai]

>
> I have not tried this, so, cannot vouch for this. Please be cautious about
> the approach presented in this blog.
>
> http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you might be
> interested in Docker-in-Docker.
>
>
> Thanks for the suggestion.. Docker-in-Docker is been discouraged here is
good read on it
https://jpetazzo.github.io/2015/09/03/do-not-use-docker-in-docker-for-ci/

- Jeeva

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Re: Build Docker Image from a Dockerized Jenkins

[Ramanathan Muthaiah]

Hi Jeeva,
 

> I would like to build Docker images from a Dockerized Jenkins. There are 
> multiple solution out there but what is the recommended solution...
>
> I have been using ssh node as a work around, but I was told to use 
> https://wiki.jenkins.io/display/JENKINS/Docker+Slaves+Plugin . In order 
> for this plugin to work, I have to install docker inside the Jenkins (my 
> docker host is RHEL) and also mount the /var/run/docker.sock or enable 
> TLS. Isn't installing docker blow up the size of the Jenkins image? 
>
> Any way to install just the docker client in side the Jenkins image? 
>

I have not tried this, so, cannot vouch for this. Please be cautious about 
the approach presented in this blog.

http://niels.nu/blog/2017/continuous-blog-delivery-p2.html : you might be 
interested in Docker-in-Docker.

/Ram 

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Re: Build Docker Image from a Dockerized Jenkins

[Jeeva Chelladhurai]

Hi Nicolas,

Thanks for your input. Using Java API is an excellent idea. There is
hackathon planned for Jenkins this week
https://www.meetup.com/jenkinsBLR/events/240212894/
Perhaps, this requirement could be prioritized at the hackathon if you
could give a helping hand..

Thanks,
Jeeva

On Mon, Dec 4, 2017 at 12:48 AM, nicolas de loof 
wrote:

> There's no "recommended" solution, each plugin comes with it's own vision,
> benefits and drawbacks.
>
> docker-plugin can be used to run dockerized agents, it can run from a
> dockerized jenkins master with /var/run/docker.sock without docker CLI
> installed, as it uses a java client library for docker API.
> docker-slaves-plugin do rely on running docker CLI executed from master, I
> planned to use a java API at some point but still need to work on this. In
> the meantime I don't think there's a simple way to just install docker CLI.
> Installing full docker will make your image a bit bigger with additional
> files on filesystem but there won't be any extra process running, so not a
> major issue (considering jenkins docker image is already a big one)
>
> 2017-12-03 18:42 GMT+01:00 Jeeva Chelladhurai :
>
>> Hello All,
>>
>> I would like to build Docker images from a Dockerized Jenkins. There are
>> multiple solution out there but what is the recommended solution...
>>
>> I have been using ssh node as a work around, but I was told to use
>> https://wiki.jenkins.io/display/JENKINS/Docker+Slaves+Plugin . In order
>> for this plugin to work, I have to install docker inside the Jenkins (my
>> docker host is RHEL) and also mount the /var/run/docker.sock or enable
>> TLS. Isn't installing docker blow up the size of the Jenkins image?
>>
>> Any way to install just the docker client in side the Jenkins image?
>>
>> Thanks,
>> Jeeva
>>
>> --
>> Jeeva K S Chelladhurai
>>
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>> R2Ehtz01op2%3Dw%40mail.gmail.com
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
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Re: Build Docker Image from a Dockerized Jenkins

[Jacob Larsen]

I wouldn't use Docker Slaves for this. Just install the docker client in 
your Jenkins image and bind mount /var/run/docker.sock. Then a simple sh 
step with docker build + docker push should do the trick.


If you don't want to use your jenkins master for this, you could make a 
slave container with these tools and bind mount.


The Docker Slaves plugin is more about running your builds in containers 
than it is about building images.


/Jacob


On 2017-12-03 18:42, Jeeva Chelladhurai wrote:

Hello All,

I would like to build Docker images from a Dockerized Jenkins. There 
are multiple solution out there but what is the recommended solution...


I have been using ssh node as a work around, but I was told to use 
https://wiki.jenkins.io/display/JENKINS/Docker+Slaves+Plugin . In 
order for this plugin to work, I have to install docker inside the 
Jenkins (my docker host is RHEL) and also mount the 
/var/run/docker.sock or enable TLS. Isn't installing docker blow up 
the size of the Jenkins image?


Any way to install just the docker client in side the Jenkins image?

Thanks,
Jeeva

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Re: Build Docker Image from a Dockerized Jenkins

[nicolas de loof]

There's no "recommended" solution, each plugin comes with it's own vision,
benefits and drawbacks.

docker-plugin can be used to run dockerized agents, it can run from a
dockerized jenkins master with /var/run/docker.sock without docker CLI
installed, as it uses a java client library for docker API.
docker-slaves-plugin do rely on running docker CLI executed from master, I
planned to use a java API at some point but still need to work on this. In
the meantime I don't think there's a simple way to just install docker CLI.
Installing full docker will make your image a bit bigger with additional
files on filesystem but there won't be any extra process running, so not a
major issue (considering jenkins docker image is already a big one)

2017-12-03 18:42 GMT+01:00 Jeeva Chelladhurai :

> Hello All,
>
> I would like to build Docker images from a Dockerized Jenkins. There are
> multiple solution out there but what is the recommended solution...
>
> I have been using ssh node as a work around, but I was told to use
> https://wiki.jenkins.io/display/JENKINS/Docker+Slaves+Plugin . In order
> for this plugin to work, I have to install docker inside the Jenkins (my
> docker host is RHEL) and also mount the /var/run/docker.sock or enable
> TLS. Isn't installing docker blow up the size of the Jenkins image?
>
> Any way to install just the docker client in side the Jenkins image?
>
> Thanks,
> Jeeva
>
> --
> Jeeva K S Chelladhurai
>
> --
> You received this message because you are subscribed to the Google Groups
> "Jenkins Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to jenkinsci-users+unsubscr...@googlegroups.com.
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> msgid/jenkinsci-users/CAK5CbZV3Sc-fgYS_34PgEwRzsF20%
> 3Dp6mbaagbR2Ehtz01op2%3Dw%40mail.gmail.com
> 
> .
> For more options, visit https://groups.google.com/d/optout.
>

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Build Docker Image from a Dockerized Jenkins

[Jeeva Chelladhurai]

Hello All,

I would like to build Docker images from a Dockerized Jenkins. There are
multiple solution out there but what is the recommended solution...

I have been using ssh node as a work around, but I was told to use
https://wiki.jenkins.io/display/JENKINS/Docker+Slaves+Plugin . In order for
this plugin to work, I have to install docker inside the Jenkins (my docker
host is RHEL) and also mount the /var/run/docker.sock or enable TLS. Isn't
installing docker blow up the size of the Jenkins image?

Any way to install just the docker client in side the Jenkins image?

Thanks,
Jeeva

-- 
Jeeva K S Chelladhurai

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