refactor phala e2e image for CI

.github/workflows/phala-e2e-docker-build-push.yml

@@ -0,0 +1,65 @@
+# The Licensed Work is (c) 2022 Sygma
+# SPDX-License-Identifier: LGPL-3.0-only
+
+name: Build and publish E2E Docker image with Phala Subbridge parachain node
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  push_e2e_to_registry:
+    name: Push Phala subbridge integrated E2E Docker image to GitHub Container Registry
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+        with:
+          submodules: "true"
+      - uses: ./.github/actions/install_toolchain
+
+      - name: Prepare
+        id: prep
+        run: |
+          # creates local variable of docker image
+          # creates local variable of commit hash that triggered workflow
+          COMMIT_HASH=$(echo $GITHUB_SHA | head -c7)
+          # creates local variable to hold docker images
+          TAGS="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${COMMIT_HASH},${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:e2e-phala-latest"
+          # check if branch/tag that triggered workflow was from tags
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            # set version
+            VERSION=${GITHUB_REF#refs/tags/}
+            # append version and e2e testing name to tags
+            TAGS="${TAGS},${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:e2e-phala-${VERSION}"
+          fi
+          # sets output of step
+          echo ::set-output name=tags::${TAGS}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          push: true
+          file: ./Dockerfile_phala_parachain_e2e
+          tags: ${{ steps.prep.outputs.tags }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}