Creating docker containers for snapcraft

By default the Dockerfile builds Ubuntu 16.04 (Xenial) image with snapcraft from the edge channel.

docker build . --no-cache

It is however possible to choose the base Ubuntu version and the Snapcraft channel (risk levels):

• edge
• beta
• candidate
• stable

To do that, use --build-arg RISK=<risk> and --build-arg UBUNTU=<name> arguments:

docker build . --no-cache --build-arg RISK=beta --build-arg UBUNTU=bionic