ci: add pushing of tags and master (#7617)

.github/workflows/docker.yml

@@ -1,9 +1,13 @@
-name: Nightly Builds
-# Nightly Builds rebuilds the simapp docker image Monday - Friday at midnight
+name: Build & Push
+# Build & Push builds the simapp docker image on every push to master and
 # and pushes the image to https://hub.docker.com/r/interchainio/simapp/tags
 on:
-  schedule:
-    - cron: "0 0 * * 1-5" # deploy at midnight Monday - Friday
+  push:
+    branches:
+      - master
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+" # Push events to matching v*, i.e. v1.0, v20.15.10
+      - "v[0-9]+.[0-9]+.[0-9]+-rc*" # Push events to matching v*, i.e. v1.0-rc1, v20.15.10-rc5
 
 jobs:
   build:
@@ -12,9 +16,26 @@ jobs:
       - uses: actions/checkout@master
         with:
           fetch-depth: 0
-      - name: Get current date
-        id: date
-        run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+
+      - name: Prepare
+        id: prep
+        run: |
+          DOCKER_IMAGE=interchainio/simapp
+          VERSION=noop
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/}
+          elif [[ $GITHUB_REF == refs/heads/* ]]; then
+            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
+              VERSION=latest
+            fi
+          fi
+          TAGS="${DOCKER_IMAGE}:${VERSION}"
+          if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS,${DOCKER_IMAGE}:${VERSION}"
+          echo ::set-output name=version::${VERSION}
+          echo ::set-output name=tags::${TAGS}
+          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
@@ -28,5 +49,5 @@ jobs:
       - name: Publish to Docker Hub
         uses: docker/build-push-action@v2
         with:
-          push: true
-          tags: interchainio/simapp:nightly-${{ steps.date.outputs.date }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.prep.outputs.tags }}