I think you have misunderstood what they are doing. Dockerfile RUN command execute at the docker built time. Puppet is involved with RUN command. Only CMD command will execute at the docker container startup time. I think this will help to understand what they are doing.
On Wed, Jan 28, 2015 at 9:37 AM, Imesh Gunaratne <[email protected]> wrote: > Hi Lakmal, > > I agree with the point on the concept of running a single process, > according to [1] Puppet team is currently working on running puppet in a > different container. > > Regarding the puppet usage, IMO we do not necessarily need to run puppet > and install software at docker image build time. We could execute that > logic on container startup. > > [1] > http://puppetlabs.com/presentations/using-docker-puppet-james-turnbull-kickstarter > > On Wed, Jan 28, 2015 at 8:10 AM, Lakmal Warusawithana <[email protected]> > wrote: > >> Hi Imesh, >> >> This was there form the beginning. This is for create docker image using >> puppet, not running puppet inside a container and install application at >> run time. By design docker not mean to support this, because it have not a >> init system inside the container. By design it recommend to run single >> processor inside a container. >> >> On Wed, Jan 28, 2015 at 12:39 AM, Imesh Gunaratne <[email protected]> >> wrote: >> >>> Hi Devs, >>> >>> This is cool, now we can use Puppet with Docker: >>> >>> http://puppetlabs.com/blog/building-puppet-based-applications-inside-docker >>> >>> Currently we package Cartridge Agent package with base docker image. >>> This is an overhead. Each time we update the Cartridge Agent package we >>> need to re-create the base docker image and service docker images. >>> >>> Now with this approach we can host puppet modules in a git repo and >>> create a base docker image without bundling any software. Then we can >>> create service docker images by bundling Puppetfiles which can install >>> puppet modules on runtime. >>> >> >> This is wrong. it not install modules run time, rather it re-create >> docker image with help from puppet. >> >> >> >>> This is great! >>> >>> Thanks >>> >>> >>> -- >>> Imesh Gunaratne >>> >>> Technical Lead, WSO2 >>> Committer & PMC Member, Apache Stratos >>> >> >> >> >> -- >> Lakmal Warusawithana >> Vice President, Apache Stratos >> Director - Cloud Architecture; WSO2 Inc. >> Mobile : +94714289692 >> Blog : http://lakmalsview.blogspot.com/ >> >> > > > -- > Imesh Gunaratne > > Technical Lead, WSO2 > Committer & PMC Member, Apache Stratos > -- Lakmal Warusawithana Vice President, Apache Stratos Director - Cloud Architecture; WSO2 Inc. Mobile : +94714289692 Blog : http://lakmalsview.blogspot.com/
