Add GitHub action to run quality pipeline

.github/workflows/main.yml

@@ -0,0 +1,9 @@
+name: Quality pipeline
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Run development pipeline
+      run: docker run --rm -v $PWD:/eg beeshive/elegant-git-ci:3 ./quality-pipeline.bash testing