As of Docker 1.9, You are looking for –build-arg and the ARG instruction. Check out this document for reference. This will allow you to add ARG arg to the Dockerfile and then build with docker build –build-arg arg=2.3 .
Update: Docker-Free solution see below Using Docker This is the solution I use with gitlab using the docker:stable image. Login docker login -u $USER -p $PASSWORD $REGISTRY Check whether it’s there: docker manifest inspect $IMGNAME:$IMGTAG > /dev/null ; echo $? docker will return 0 on success or 1 on failure. If you get a warning: … Read more
You can use Environment Replacement in your Dockerfile as follows: ENV PATH=”/opt/gtk/bin:${PATH}”
EDIT – since Jul 23, 2015 The official postgres docker image will run .sql scripts found in the /docker-entrypoint-initdb.d/ folder. So all you need is to create the following sql script: init.sql CREATE USER docker; CREATE DATABASE docker; GRANT ALL PRIVILEGES ON DATABASE docker TO docker; and add it in your Dockerfile: Dockerfile FROM library/postgres … Read more