Happy Path using github actions

Check with each change on the plug-in registry
And check with both Alpine and UBI8 images

Change-Id: I1b3a01712e45dfd35cc5a8ee94b2ac4ba51e22d5
Signed-off-by: Florent Benoit <fbenoit@redhat.com>

.github/workflows/happy-path.yaml

@@ -0,0 +1,58 @@
+#
+# Copyright (c) 2021 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+
+# che-plugin-registry Happy Path workflow
+# matrix jobs with alpine and ubi8
+name: Happy Path
+
+on: [push, pull_request]
+
+jobs:
+  image-build:
+    strategy:
+      matrix:
+        dist: [ 'alpine', 'rhel' ]
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Clone source code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - name: image-build
+      run: |
+        if [[ "${{matrix.dist}}" == "alpine" ]]; then
+          docker pull quay.io/eclipse/che-plugin-registry:nightly
+          docker build --cache-from=quay.io/eclipse/che-plugin-registry:nightly -t che-plugin-registry-image -f ./build/dockerfiles/Dockerfile --target registry .
+        elif [[ "${{matrix.dist}}" == "rhel" ]]; then
+          docker build -t che-plugin-registry-image -f ./build/dockerfiles/rhel.Dockerfile --target registry .
+        fi  
+        # save locally built image
+        docker save -o docker-image.tar che-plugin-registry-image:latest
+    - name: Start minikube
+      id: run-minikube
+      uses: che-incubator/setup-minikube-action@next
+    - name: load-image-minikube-registry
+      id: load-image-minikube-registry
+      run: |
+        # load image in the docker registry
+        eval $(minikube docker-env)
+        docker load --input=docker-image.tar
+        # display images
+        docker images
+    - name: Deploy Eclipse Che
+      id: deploy-che
+      uses: che-incubator/che-deploy-action@next
+      with:
+        # use custom image built by this PR
+        plugin-registry-image: che-plugin-registry-image:latest
+    - name: Run Happy Path tests
+      id: run-happy-path-tests
+      uses: che-incubator/happy-path-tests-action@next
+      with:
+        che-url: ${{ steps.deploy-che.outputs.che-url }}