feat(ci/cd): add release-please for automated release management

This commit adds release-please as a github action, replacing the
develop, main and releases actions. Now, with each commit to main, a PR
is either created or updated with the contents of all changes since the
last release. When this PR is landed, a tag and branch are created, and
the build artifacts (binaries) are uploaded as part of a regular github
release.

A practical result of this landing will be that all work will subsequently
happen on the `main` branch (aside from backport releases) and the `develop`
branch will no longer be used.

When this is landed on `main`, a release will not be created as per usual.
Instead, a PR will be created with the contents of the changes since the
last release.

.github/workflows/releases.yaml → .github/workflows/ci.yaml

@@ -1,45 +1,64 @@
-# Deploy artifacts for any pushes with a version tag (releases).
-name: Releases
+name: CI
 
 on:
   push:
-    tags:
-      - 'v*'
+    branches:
+      - "main"
 
 jobs:
-  build:
-    name: Build and Release Artifacts
+  build-and-publish:
     runs-on: ubuntu-latest
     steps:
+      - uses: GoogleCloudPlatform/release-please-action@v2.1.1
+        id: release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          release-type: simple
+
+      # Standard build tasks
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
       - name: Test
         run:  make test
       - name: Build
         run:  make cross-platform
+      - name: Lint
+        run: make check
+      - name: Permissions
+        run: chmod a+x faas_*amd*
+
+      # Upload all build artifacts whether it's a release or not
+      - uses: actions/upload-artifact@v2
+        with:
+          name: OSX Binary
+          path: faas_darwin_amd64
+      - uses: actions/upload-artifact@v2
+        with:
+          name: Linux Binary
+          path: faas_linux_amd64
+      - uses: actions/upload-artifact@v2
+        with:
+          name: Windows Binary
+          path: faas_windows_amd64.exe
+
+      # Build and push a latest image with each commit
       - name: Image
         run:  make image
       - name: Push Image
         env:
           USER: ${{ secrets.QUAY_USER }}
           PASS: ${{ secrets.QUAY_TOKEN }}
         run: |
-          docker login -u "$USER" -p "$PASS" quay.io 
+          docker login -u "$USER" -p "$PASS" quay.io
           make push && make latest
+
+      # The following steps are only executed if this is a release
       - name: Compress Binaries
+        if: ${{ steps.release.outputs.release_created }}
         run: gzip faas_darwin_amd64 faas_linux_amd64 faas_windows_amd64.exe
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Release ${{ github.ref }}
-          draft: false
-          prerelease: false
       - name: Upload Darwin Binary
         uses: actions/upload-release-asset@v1
+        if: ${{ steps.release.outputs.release_created }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
@@ -49,6 +68,7 @@ jobs:
           asset_content_type: application/x-gzip
       - name: Upload Linux Binary
         uses: actions/upload-release-asset@v1
+        if: ${{ steps.release.outputs.release_created }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
@@ -58,10 +78,22 @@ jobs:
           asset_content_type: application/x-gzip
       - name: Upload Windows Binary
         uses: actions/upload-release-asset@v1
+        if: ${{ steps.release.outputs.release_created }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
           asset_path: ./faas_windows_amd64.exe.gz
           asset_name: faas_windows_amd64.exe.gz
           asset_content_type: application/x-gzip
+      - name: Create Release
+        id: create_release
+        if: ${{ steps.release.outputs.release_created }}
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false

version.txt

@@ -0,0 +1 @@
+0.6.2