Add GitHub action to build commits to main

Signed-off-by: Nicko Guyer <[email protected]>

Author: nguyer

.github/workflows/docker_main.yml

@@ -0,0 +1,40 @@
+name: Docker Main Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set build tag
+        id: build_tag_generator
+        run: |
+          RELEASE_TAG=$(curl https://api.github.com/repos/hyperledger/firefly-dataexchange-https/releases/latest -s | jq .tag_name -r)
+          BUILD_TAG=$RELEASE_TAG-$(date +"%Y%m%d")-$GITHUB_RUN_NUMBER
+          echo ::set-output name=BUILD_TAG::$BUILD_TAG
+
+      - name: Build
+        run: |
+          docker build \
+            --label commit=$GITHUB_SHA \
+            --label build_date=$(date -u +"%Y-%m-%dT%H:%M:%SZ") \
+            --label tag=${{ steps.build_tag_generator.outputs.BUILD_TAG }} \
+            --tag ghcr.io/hyperledger/firefly-dataexchange-https:${{ steps.build_tag_generator.outputs.BUILD_TAG }} .
+      
+      - name: Tag release
+        run: docker tag ghcr.io/hyperledger/firefly-dataexchange-https:${{ steps.build_tag_generator.outputs.BUILD_TAG }} ghcr.io/hyperledger/firefly-dataexchange-https:head
+      
+      - name: Push docker image
+        run: |
+          echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+          docker push ghcr.io/hyperledger/firefly-dataexchange-https:${{ steps.build_tag_generator.outputs.BUILD_TAG }}
+      
+      - name: Push head tag
+        run: |
+          echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u $GITHUB_ACTOR --password-stdin
+          docker push ghcr.io/hyperledger/firefly-dataexchange-https:head