chore: add daily executor build action

kaniko outputs each tag on a new line, so users that push multiple tags
at once would get an error as the output wasn't prepared to handle multi-line
text

.github/workflows/executor.yml

@@ -0,0 +1,94 @@
+name: Executor
+
+on:
+  schedule:
+    - cron: "0 6 * * *" # Daily at 6 AM UTC
+  workflow_dispatch: # Allow manual triggering
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: aevea/action-kaniko/executor
+  SOURCE_REPO: chainguard-forks/kaniko
+
+jobs:
+  check-and-build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Get latest tag from source repo
+        id: source-tag
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          LATEST_TAG=$(gh release view --repo ${{ env.SOURCE_REPO }} --json tagName -q '.tagName' 2>/dev/null || true)
+          if [ -z "$LATEST_TAG" ]; then
+            # Fallback to tags if no releases
+            LATEST_TAG=$(gh api repos/${{ env.SOURCE_REPO }}/tags --jq '.[0].name')
+          fi
+          echo "tag=$LATEST_TAG" >> $GITHUB_OUTPUT
+          echo "Latest source tag: $LATEST_TAG"
+
+      - name: Check if tag already exists in registry
+        id: check-tag
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          # Check if the image with this tag already exists using GitHub Packages API
+          EXISTING_TAGS=$(gh api /users/aevea/packages/container/action-kaniko%2Fexecutor/versions --jq '.[].metadata.container.tags[]' 2>/dev/null || true)
+
+          if echo "$EXISTING_TAGS" | grep -qx "${{ steps.source-tag.outputs.tag }}"; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+            echo "Tag ${{ steps.source-tag.outputs.tag }} already exists, skipping build"
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+            echo "Tag ${{ steps.source-tag.outputs.tag }} does not exist, will build"
+          fi
+
+      - name: Checkout source repository
+        if: steps.check-tag.outputs.exists == 'false'
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ env.SOURCE_REPO }}
+          ref: ${{ steps.source-tag.outputs.tag }}
+
+      - name: Set up Docker Buildx
+        if: steps.check-tag.outputs.exists == 'false'
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        if: steps.check-tag.outputs.exists == 'false'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push executor image
+        if: steps.check-tag.outputs.exists == 'false'
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: deploy/Dockerfile
+          target: kaniko-executor
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.source-tag.outputs.tag }}
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
+          build-args: |
+            TARGETARCH=amd64
+            TARGETOS=linux
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Summary
+        run: |
+          if [ "${{ steps.check-tag.outputs.exists }}" = "true" ]; then
+            echo "## Build Skipped" >> $GITHUB_STEP_SUMMARY
+            echo "Tag \`${{ steps.source-tag.outputs.tag }}\` already exists in the registry." >> $GITHUB_STEP_SUMMARY
+          else
+            echo "## Build Complete" >> $GITHUB_STEP_SUMMARY
+            echo "Successfully built and pushed \`${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.source-tag.outputs.tag }}\`" >> $GITHUB_STEP_SUMMARY
+          fi

.github/workflows/pr.yml

@@ -6,8 +6,8 @@ jobs:
     runs-on: ubuntu-latest
     name: Verify commit messages
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Run commitsar
-        uses: docker://aevea/commitsar@sha256:8d2db4e430dd06e3fcde173add43dada80b37150ba1191a69cda1c0bcdba9cb1
+        uses: docker://aevea/commitsar@sha256:e4aed72de9a00b990a53c678ad51fbe9bd04e127a617d10beab0ef0204b1dfa0

.github/workflows/push.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Build docker image
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v6
 
       - name: GitHub Package Registry
         uses: aevea/action-kaniko@master

.github/workflows/release.yml

@@ -10,12 +10,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
       - name: Release Notary Action
-        uses: docker://aevea/release-notary@sha256:b77e86ce9ce4b0c8774cdb3b807b756d1d6139d73aca74388560250de259be4e
+        uses: docker://aevea/release-notary@sha256:690915bf87458fd8eb1e1ff0be34b33377f920eda3f38b96c62ecbf897c831f4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:

Dockerfile

@@ -2,7 +2,7 @@ FROM alpine as certs
 
 RUN apk --update add ca-certificates
 
-FROM gcr.io/kaniko-project/executor:v1.20.0-debug
+FROM gcr.io/kaniko-project/executor:v1.23.2-debug
 
 SHELL ["/busybox/sh", "-c"]
 

README.md

@@ -1,5 +1,8 @@
 # Kaniko image builder
 
+> [!WARNING]  
+> The kaniko project no longer seems to [have maintainers](https://github.com/GoogleContainerTools/kaniko/issues/3348). Keep this in mind before deciding to use kaniko as your image builder.
+
 This Action uses the [kaniko](https://github.com/GoogleContainerTools/kaniko) executor instead of the docker daemon. Kaniko builds the image
 by extracting the filesystem of the base image, making the changes in the user space, snapshotting any change and appending it to the base
 image filesystem.

entrypoint.sh

@@ -94,13 +94,17 @@ EOF
 # https://github.com/GoogleContainerTools/kaniko/issues/1803
 # https://github.com/GoogleContainerTools/kaniko/issues/1349
 export IFS=''
+# Removes a trailing new line
+ARGS=$(echo "${ARGS}" | sed 's/\n*$//')
 kaniko_cmd="/kaniko/executor ${ARGS} --reproducible --force"
 echo "Running kaniko command ${kaniko_cmd}"
 eval "${kaniko_cmd}"
 
 echo "image=$IMAGE" >> "$GITHUB_OUTPUT"
 echo "digest=$(cat /kaniko/digest)" >> "$GITHUB_OUTPUT"
-echo "image-tag-digest=$(cat /kaniko/image-tag-digest)" >> "$GITHUB_OUTPUT"
+echo "image-tag-digest<<EOF" >>"$GITHUB_OUTPUT"
+echo "$(cat /kaniko/image-tag-digest)" >>"$GITHUB_OUTPUT"
+echo 'EOF' >>"$GITHUB_OUTPUT"
 
 
 if [ -n "$INPUT_SKIP_UNCHANGED_DIGEST" ]; then