How to create named and latest tag in Docker

Question

Supposed I have an image that I want to tag as 0 10 24  in my case it s an image containing Node js 0 10 24   I built that image using a Dockerfile and executing docker build and by providing a tag using the -t parameter   I expect that one day I will have additional versions of that image  so I will rerun the process  just with another tag name   So far  so good  This works great and fine and all is well   But  and this is where problems start  I also want to always have the newest image tagged ad latest additionally  So I guess I need to give two names to the very same image   How do I do this  Do I really need to re-run docker build on the exact same version again  but this time use another tag  is is there a better option

User · Answer

ID   docker build -t creack node    doesn t work for me since ID will contain the output from the build   SO I m using this small BASH script      bin bash  set -o pipefail  IMAGE    your image name    VERSION    the version     docker build -t   IMAGE    VERSION      tee build log    exit 1 ID   tail -1 build log   awk   print  3     docker tag  ID   IMAGE  latest  docker images   grep   IMAGE   docker run --rm   IMAGE  latest  opt java7 bin java -version

User · Answer

Just grep the ID from docker images   docker build -t creack node latest   ID    docker images   grep  creak node    head -n 1   awk   print  3     docker tag   ID  creack node 0 10 24 docker tag   ID  creack node latest   Needs no temporary file and gives full build output  You still can redirect it to  dev null or a log file

User · Answer

Here is my bash script  docker build -t   IMAGE    VERSION    docker tag   IMAGE    VERSION    IMAGE  latest   You can then remove untagged images if you rebuilt the same version with  docker rmi   docker images   grep    lt none gt     awk   print  3      link  or  docker rmi   docker images   grep    lt none gt     tr -s       cut -d    -f3   tr   n         or   Clean up commands    Docker 1 13 introduces clean-up commands  To remove all unused containers  images  networks and volumes   docker system prune   or individually   docker container prune docker image prune docker network prune docker volume prune

User · Answer

You can have multiple tags when building the image     docker build -t whenry fedora-jboss latest -t whenry fedora-jboss v2 1     Reference  https   docs docker com engine reference commandline build  tag-image-t

User · Answer

Once you have your image  you can use    docker tag  lt image gt   lt newName gt   lt repoName gt   lt tagName gt     Build and tag the image with creack node latest    ID   docker build -q -t creack node     Add a new tag    docker tag  ID creack node 0 10 24  You can use this and skip the -t part from build    docker tag  ID creack node latest

User · Answer

Variation of Aaron s answer  Using sed without temporary files     bin bash VERSION 1 0 0 IMAGE company image ID   docker build  -t   IMAGE        tail -1   sed  s   Successfully built          1     docker tag   ID    IMAGE    VERSION  docker tag -f   ID    IMAGE  latest

[docker] How to create named and latest tag in Docker?

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