Unified Test runs in Docker (MiczFlor#2082)

* removed obsolete v3.x workflow files

* set user and group as build args to test altuser

removed now obsolete "*_altuser" Dockerfile

* set GIT_BRANCH and GIT_URL as build args

makes sure that the installation script uses the current repo/branch

* use correct variables for refname resolving

* harmonized workflow and Dockerfiles

* optimize test docker performance. copy changed

only include the scripts that are needed.
Otherwise every code change will invalidate the container cache.
changed internal path of container and test scripts

* optimize test docker performance. refactored

changed thestructure to use the cache as much as possible.
repo url -> packages -> user -> scripts

* changed cache key

with ref instead of ref_name pull request will get a different cache

* get username with whoami

to be compatible with containers

* implemented different strategies for uniformity

* set noninteractive on debconf

get rid of warning "debconf: unable to initialize frontend: Dialog"
export DEBIAN_FRONTEND=noninteractive does not work with sudo

* unified workflow for debian. delete obsolete files

* fix branch name on pr

* refactored into subworkflow

* fixed apt-key deprecation

* unified Dockerfile. renamed workflow files

* fix repo name on pullrequest

.github/workflows/test_docker_debian.yml

@@ -0,0 +1,37 @@
+name: Test Install Scripts Debian
+
+on:
+  schedule:
+    # run at 5:00 every sunday
+    - cron: '0 5 * * 0'
+  push:
+    branches-ignore:
+      - 'future3/**'
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ develop ]
+
+# let only one instance run the test so cache is not corrupted.
+# cancel already running instances as only the last run will be relevant
+concurrency:
+    group: ${{ github.ref }}-test-debian
+    cancel-in-progress: true
+
+jobs:
+
+  # Build container and run tests
+  run:
+    name: ${{ matrix.debian_version_name }}
+    strategy:
+      fail-fast: false
+      matrix:
+        debian_version_name: ['bullseye', 'buster']
+    uses: ./.github/workflows/test_docker_debian_versionname_sub.yml
+    with:
+      runs_on: ubuntu-latest
+      platform: linux/arm/v7
+      docker_image_name: rpi-jukebox-rfid
+      cache_scope: ${{ github.ref }}-test-debian
+      matrix_usernames: "['pi', 'hans']"
+      matrix_test_scripts: "['run_installation_tests.sh', 'run_installation_tests2.sh', 'run_installation_tests3.sh']"
+      debian_version_name: ${{ matrix.debian_version_name }}