fix(docker): prevent skipped builds when queued runs are dropped

- Set cancel-in-progress: false so queued builds wait for the active
  run instead of cancelling it
- Compare changed files against the last successful push-triggered
  build commit (via GitHub API), not just the parent commit
- If no previous successful build exists, always build

Signed-off-by: Mete Fatih Cırıt <mfc@autoware.org>

Author: xmfcx

.github/workflows/docker-build-and-push-new.yaml

@@ -10,18 +10,39 @@ on:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
-  cancel-in-progress: true
+  cancel-in-progress: false
 
 jobs:
   changed-files:
     runs-on: ubuntu-24.04
     outputs:
-      should-build: ${{ steps.check.outputs.any_changed == 'true' || github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.ref_type == 'tag') }}
+      should-build: ${{ steps.check.outputs.any_changed == 'true' || steps.last-success.outputs.sha == '' || github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && github.ref_type == 'tag') }}
     steps:
       - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Find last successful build commit
+        id: last-success
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          sha=$(gh api \
+            "repos/${{ github.repository }}/actions/workflows/docker-build-and-push-new.yaml/runs?branch=main&status=success&event=push&per_page=1" \
+            --jq '.workflow_runs[0].head_sha // empty')
+
+          if [ -n "$sha" ] && git cat-file -e "$sha" 2>/dev/null; then
+            echo "sha=$sha" >> "$GITHUB_OUTPUT"
+            echo "Found last successful build at $sha"
+          else
+            echo "sha=" >> "$GITHUB_OUTPUT"
+            echo "No previous successful build found, will force build"
+          fi
+
       - id: check
         uses: step-security/changed-files@v47
         with:
+          base_sha: ${{ steps.last-success.outputs.sha }}
           files: |
             docker-new/**
             ansible/**