Working GitHub Actions with Python 2.7

Due to:

  * actions/setup-python#672
  * actions/runner-images#7401

Alternative option would be to consider:

  * https:/coatl-dev/docker-six
  * https:/MatteoH2O1999/setup-python

Advantage of this change is that it only relies on Debian.

README.md

@@ -21,4 +21,8 @@ Thanks and kudos to:
  * https:/daktak - the original creator of Pebble GitHub Actions
  * First seen in [mattrossman/forecaswatch2#50](https:/mattrossman/forecaswatch2/pull/50)
  * Everyone on the Rebble team for keeping Pebbles usable
-
+ * All the cool people with useful/viable/workable solutions and advice to:
+ * https:/actions/setup-python/issues/672
+ * https:/actions/runner-images/issues/7401
+ * https:/coatl-dev/docker-six - which I have not used but like having in my back pocket
+ * https:/MatteoH2O1999/setup-python - which I have not used but like having in my back pocket

action.yml

@@ -33,10 +33,24 @@ jobs:
  # This workflow contains a single job called "build"
  build:
  # The type of runner that the job will run on
- runs-on: ubuntu-18.04
+ runs-on: ubuntu-20.04
+
+ container:
+ # Pebble SDK needs Python 2.7
+ image: python:2.7.18-buster
 
  # Steps represent a sequence of tasks that will be executed as part of the job
  steps:
+ # Sanity checks for debugging, if/when problems occur
+ - name: pyver
+ run: python --version
+ - name: whichpy
+ run: which python
+ - name: whichpy2
+ run: which python2
+ - name: whichpy3
+ run: which python3
+
  # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
  # from https://levelup.gitconnected.com/how-to-manually-trigger-a-github-actions-workflow-4712542f1960
  - name: Clone Repository (Latest)
@@ -48,11 +62,11 @@ jobs:
  with:
  ref: ${{ github.event.inputs.git-ref }}
  - uses: actions/setup-node@v2
- - uses: actions/setup-python@v2
-  with:
- python-version: '2.7'
+ #- name: apt-getsudo
+ # run: apt-get update; apt-get -qq install -y sudo
+
  - name: apt-get
- run: sudo apt-get update; sudo apt-get -qq install -y wget python-pip python2.7-dev libsdl1.2debian libfdt1 libpixman-1-0 nodejs npm libfreetype6 libx11-6 rlwrap
+ run: apt-get update; apt-get -qq install -y wget python-pip python2.7-dev libsdl1.2debian libfdt1 libpixman-1-0 nodejs npm libfreetype6 libx11-6 rlwrap
  - name: virtualenv
  run: pip install virtualenv
  - name: get sdk