Cellular Network Infrastructure

There is a problem appearing when building Docker images based on 'laforge/debian-jessie-build'...

After building, the 'debian-jessie-build' image is being tagged according to the following rule:

$(USER)/$(IMAGE) # e.g. user/debian-jessie-build

so, if the current $(USER) != 'laforge', build fails:

make[1]: Leaving directory `/home/user/osmocom/docker-playground/debian-jessie-build'
make -C osmo-stp-master
make[1]: Entering directory `/home/user/osmocom/docker-playground/osmo-stp-master'
docker build --build-arg USER=user -t docker.io/user/osmo-stp-master:latest .
Sending build context to Docker daemon  9.216kB
Step 1/16 : FROM laforge/debian-jessie-build
repository laforge/debian-jessie-build not found: does not exist or no pull access
make[1]: *** [docker-build] Error 1
make[1]: Leaving directory `/home/user/osmocom/docker-playground/osmo-stp-master'
make: *** [osmo-stp-master] Error 2

because there is no 'laforge/debian-jessie-build', there are:

# docker image ls
REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
user/debian-jessie-build  latest              1f6421af8bfc        15 minutes ago      621MB
debian                    jessie              79f4bda91989        3 weeks ago         127MB

I started to think, may we parametrize the 'FROM laforge/debian-jessie-build' somehow?
Fortunately, yes! The following header makes the trick:

ARG     USER
FROM    $USER/debian-jessie-build

A change will be sent soon...