docker-tag-build.sh

# I build my image with the latest tag
docker build –t myapp:latest .

# get the image's id
export latest=“$(docker images | grep myapp:latest | head –n 1 | awk ‘{print $3}’)”

# now here comes the cool part, generate a tag for the image related to the current state of the repo
docker tag $latest “$(git rev-parse –q HEAD)” # sha of the commit
docker tag $latest “$(git describe —always —dirty —tags)” # tag
docker tag $latest “$(git rev-parse –q —abbrev-ref HEAD)” #branch

# now we upload all these to the registry
for image in $(docker images | grep myapp | awk ‘{print $1 “:” $2}’  | head –n 4) ; \
      do docker push $image ;
   done