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?
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
Once you have your image, you can use
$ docker tag <image> <newName>/<repoName>:<tagName>
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 $ID creack/node:latest
Variation of Aaron's answer. Using sed without temporary files
#!/bin/bash
VERSION=1.0.0
IMAGE=company/image
ID=$(docker build -t ${IMAGE} . | tail -1 | sed 's/.*Successfully built \(.*\)$/\1/')
docker tag ${ID} ${IMAGE}:${VERSION}
docker tag -f ${ID} ${IMAGE}:latest
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 "^<none>" | awk "{print $3}")
or
docker rmi $(docker images | grep "^<none>" | tr -s " " | cut -d' ' -f3 | tr '\n' ' ')
or
Clean up commands:
Docker 1.13 introduces clean-up commands. To remove all unused containers, images, networks and volumes:
docker system prune
or individually:
docker container prune
docker image prune
docker network prune
docker volume prune
Just grep the ID from docker images
:
docker build -t creack/node:latest .
ID="$(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.
Source: Stackoverflow.com