fix(workflows): fix workflow syntax errors, revert Alpine, and enable PR builds

- Change default-branch to target-branch for release-please-action@v4
- Remove invalid continue-on-error input from build-push-action@v6
- Revert Alpine from 3.23.0 to 3.22.2 to fix ARM64 qemu emulation issues
- Change golang:1.25.5-alpine to golang:1.25.4-alpine (uses Alpine 3.22.2)
- Add pull_request trigger to dev-build workflow
- Only push images on push events, not PRs
- Skip GHCR login on PRs

Author: d0ugal

.github/workflows/dev-build.yml

@@ -9,6 +9,13 @@ on:
       - LICENSE
       - '**/*.example.yml'
       - '**/*.example.yaml'
+  pull_request:
+    paths-ignore:
+      - CHANGELOG.md
+      - '**.md'
+      - LICENSE
+      - '**/*.example.yml'
+      - '**/*.example.yaml'
 
 env:
   REGISTRY: ghcr.io
@@ -52,7 +59,13 @@ jobs:
             exit 0
           fi
 
+          # For PR events, check changed files against base branch
+          if [ "${{ github.event_name }}" = "pull_request" ]; then
+            BASE_SHA="${{ github.event.pull_request.base.sha }}"
+            HEAD_SHA="${{ github.event.pull_request.head.sha }}"
+            CHANGED_FILES=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA")
           # For push events, check changed files against base branch
+          else
           BASE_SHA="${{ github.event.before }}"
           HEAD_SHA="${{ github.event.after }}"
 
@@ -62,6 +75,7 @@ jobs:
           else
             # Get list of changed files
             CHANGED_FILES=$(git diff --name-only "$BASE_SHA" "$HEAD_SHA")
+            fi
           fi
 
           if [ -z "$CHANGED_FILES" ]; then
@@ -107,6 +121,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to GHCR
+        if: github.event_name == 'push'
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
@@ -154,13 +169,12 @@ jobs:
         with:
           context: .
           platforms: linux/amd64,linux/arm64
-          push: true
+          push: ${{ github.event_name == 'push' }}
           tags: ${{ steps.docker_meta.outputs.tags }}
           labels: ${{ steps.docker_meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=min
-          continue-on-error: false
           build-args: |
             VERSION=${{ steps.meta.outputs.dev_tag }}
             COMMIT=${{ github.sha }}
-            BUILD_DATE=${{ github.event.head_commit.timestamp }}
+            BUILD_DATE=${{ github.event.head_commit.timestamp || github.event.pull_request.head.repo.updated_at }}

.github/workflows/release-please.yml

@@ -30,7 +30,7 @@ jobs:
         release-type: go
         path: .
         token: ${{ secrets.RELEASE_TOKEN }}
-        default-branch: main
+        target-branch: main
         fork: false
 
     # Debug info
@@ -77,7 +77,6 @@ jobs:
         labels: ${{ steps.meta.outputs.labels }}
         cache-from: type=gha,scope=release-${{ steps.release_please.outputs.tag_name }}
         cache-to: type=gha,mode=max,scope=release-${{ steps.release_please.outputs.tag_name }}
-        continue-on-error: false
         build-args: |
           VERSION=${{ steps.release_please.outputs.tag_name }}
           COMMIT=${{ github.sha }}

Dockerfile

@@ -1,5 +1,5 @@
 # Build stage
-FROM golang:1.25.5-alpine AS builder
+FROM golang:1.25.4-alpine AS builder
 
 WORKDIR /app
 
@@ -32,7 +32,7 @@ RUN VERSION=${VERSION:-$(git describe --tags --always --dirty 2>/dev/null || ech
     -o ghcr-exporter ./cmd
 
 # Final stage
-FROM alpine:3.23.0
+FROM alpine:3.22.2
 
 RUN apk --no-cache add ca-certificates wget