I've been trying to get to grips with Docker over the last few days, and as learning exercise I've been trying to build a chain of images from scratch, however I've run into some problems and I hope someone can put me on the right track.
I working in a VM running Fedora 21 Beta Server, fully up to date. My Docker version is docker-io 1.3.2-2.fc21. The steps I've taken are: 1) Downloaded Fedora-Docker-Base-20141029-21_Beta.x86_64.tar.gz to a directory called fedora and created a file in that directory called Dockerfile with only three lines: FROM scratch MAINTAINER Keith Sharp <[email protected]> ADD Fedora-Docker-Base-20141029-21_Beta.x86_64.tar.gz / 2) Used the docker command to build a new image: $ sudo docker build -t passback/fedora:21beta . Sending build context to Docker daemon 83.58 MB Sending build context to Docker daemon Step 0 : FROM scratch Pulling repository scratch 511136ea3c5a: Pulling image (latest) from scratch, endpoint: https://registry-1.511136ea3c5a: Download complete Status: Downloaded newer image for scratch:latest ---> 511136ea3c5a Step 1 : MAINTAINER Keith Sharp <[email protected]> ---> Running in 9091a442001f ---> bbcce511a8de Removing intermediate container 9091a442001f Step 2 : ADD Fedora-Docker-Base-20141029-21_Beta.x86_64.tar.gz / ---> 7058f928f119 Removing intermediate container de568a0cb7f8 Successfully built 7058f928f119 3) So far so good, the images show up as expected: $ sudo docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE passback/fedora 21beta 7058f928f119 2 minutes ago 225.7 MB scratch latest 511136ea3c5a 17 months ago 0 B 4) However, when I try to launch my new image I hit a problem: $ sudo docker run --rm -ti passback/fedora:21beta /bin/sh 2014/11/26 14:15:10 Error response from daemon: Cannot start container 19fad5c0c8e1a11784b616d17d632c9a8978bdfed2fb2aca75252e28619ef5c1: exec: "/bin/sh": stat /bin/sh: no such file or directory 5) I had thought it was because I was missing a CMD or ENTRYPOINT instruction so I tried creating a new image based on this Dockerfile: FROM passback/fedora:21beta MAINTAINER Keith Sharp <[email protected]> CMD ["/bin/bash"] 6) The build works, but when I try to run I get the same error: $ sudo docker run --rm -ti passback/test 2014/11/26 14:19:24 Error response from daemon: Cannot start container 1a20d7ceade9f4bc2d729ca081c10d849fe941e748de804fb1ad75abbf4d4941: exec: "/bin/bash": stat /bin/bash: no such file or directory I'm sure I'm missing something simple, but no amount of searching is helping. Could someone point me in the right direction? Thanks, Keith. _______________________________________________ cloud mailing list [email protected] https://admin.fedoraproject.org/mailman/listinfo/cloud Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
