Fix GitHub workflow docker builds

[talnor]

The purpose of the code changes are as follows:

• Fix GitHub workflow for docker builds https://github.com/genomic-medicine-sweden/gms-artic/issues/79
  • This changes the docker builds for the Illumina and Nanopore from running on push to master + cron schedule to only run on push to master. Since pangolin is in a separate container, the cron updates are not necessary for these.
• Add workflows for stage builds on push.

Will not do

• Fix other workflows that are failing - these are adressed in a separate PR https://github.com/genomic-medicine-sweden/gms-artic/pull/74
• Change the structure for the pangolin docker builds

Standard test procedure

• [ ] The self-test mentioned in the README finished successfully
• [ ] Produced files contain expected values
• [ ] The code has been reviewed by @octocat
• [x] The stage images are built and uploaded successfully

This version is a:

• [ ] MAJOR - when you make incompatible API changes
• [ ] MINOR - when you add functionality in a backwards compatible manner
• [x] PATCH - when you make backwards compatible bug fixes or documentation/instructions

[talnor]

Looks really good. Some structural feedback:

• Two of the self-tests are currently failing

Indeed! They have been for some time as well. I will try to fix it in another PR.

• The building images recipes are better suited in another folder than workflow, which is currently just for the pipeline's subworkflows

I am not sure if GitHub actions will pick them up if we move them elsewhere.

• Both the push recipes look identical. It could also be clearer in the difference of what the regular recipes and the push recipe does.

True! For each build-file, I made one file for the master branch and one to be used for testing in PRs. They differ in when they are activated and where they push the docker image to (gms-artic-nanopore vs gms-artic-nanopore-stage). Perhaps renaming the files makes it more clear?

{build_dockerfile}_on_push.yml -> {build_dockerfile}_master.yml {build_dockerfile}_on_push_stage.yml -> {build_dockerfile}_stage.yml

[sylvinite]

All the suggestions sounds good to me. Ill unlock the PR.