Enhance Woodpecker CI configuration for multi-platform builds

- Introduced a matrix configuration to support building for both ARM64 and AMD64 platforms.
- Updated the Dockerfile reference to be dynamic based on the selected platform.
- Modified tag formatting for Docker images to include platform-specific tags, improving clarity in versioning.

Made-with: Cursor

.woodpecker.yml

@@ -2,14 +2,26 @@ when:
   branch: [stage, main]
   event: push
 
+matrix:
+  include:
+    - PLATFORM: linux/arm64
+      TAG: arm
+      DOCKERFILE: Dockerfile.jetson
+    - PLATFORM: linux/amd64
+      TAG: amd64
+      DOCKERFILE: Dockerfile
+
+labels:
+  platform: ${PLATFORM}
+
 steps:
   - name: build-and-push
     image: plugins/docker
     settings:
-      dockerfile: Dockerfile.jetson
+      dockerfile: ${DOCKERFILE}
       context: .
       repo: registry:5000/detections
       tags:
-        - "${CI_COMMIT_BRANCH}"
-        - "${CI_COMMIT_SHA:0:8}"
+        - "${CI_COMMIT_BRANCH}-${TAG}"
+        - "${CI_COMMIT_SHA:0:8}-${TAG}"
       insecure: true