chore: Distribute as docker image

[mircea-pavel-anton]

This is currently a WIP to solve #1801

Some notes

• I chose debian as a base for the docker image instead of alpine, for example, such that I can load the bash completion

• I set the workdir to /workspace to facilitate mounting volumes into the container via ad-hoc docker commands, i.e.:

  docker run -it -v $PWD:/workspace ghcr.io/go-task/task:v3.39.2-amd64 lint # equivalent of `task lint`

• I set the cmd instead of the entrypoint to the task executable such that it is easier to just exec into the container like so:

  docker run -it -v $PWD:/workspace ghcr.io/go-task/task:v3.39.2-amd64 /bin/bash

• the current implementation pushes both to dockerhub and ghcr.io

• the current implementation pushes:

  • version tagged images (ghcr.io/go-task/task:v3.39.2)
  • version and arch tagged images (ghcr.io/go-task/task:v3.39.2-amd64)
  • latest images (ghcr.io/go-task/task:latest)

TODO

• update release workflow to login to ghcr and/or dockerhub
• figure out bash completion