fix: add support form building an arm64 version for Pi 4

.github/workflows/docker-build.yaml

@@ -110,7 +110,13 @@ jobs:
       - name: Set Docker tag
         run: |
           echo "GIT_SHORT_HASH=$(git rev-parse --short HEAD)" >> $GITHUB_ENV
-          echo "BOARD=${{ matrix.board }}" >> $GITHUB_ENV
+
+          if [ "${{ matrix.board }}" == "pi4" ]; then
+            echo "BOARD=${{ matrix.board }}-64" >> $GITHUB_ENV
+          else
+            echo "BOARD=${{ matrix.board }}" >> $GITHUB_ENV
+          fi
+
           echo "SHM_SIZE=256mb" >> $GITHUB_ENV
 
       - name: Prepare Balena file

tools/image_builder/__main__.py

@@ -183,10 +183,18 @@ def main(
     for service in services_to_build:
         docker_tags = [
             f'screenly/anthias-{service}:{docker_tag}',
-            f'screenly/anthias-{service}:{git_short_hash}-{board}',
             f'screenly/srly-ose-{service}:{docker_tag}',
-            f'screenly/srly-ose-{service}:{git_short_hash}-{board}',
         ]
+        if board == 'pi4' and platform == 'linux/arm64/v8':
+            docker_tags.extend([
+                f'screenly/anthias-{service}:{git_short_hash}-{board}-64',
+                f'screenly/srly-ose-{service}:{git_short_hash}-{board}-64',
+            ])
+        else:
+            docker_tags.extend([
+                f'screenly/anthias-{service}:{git_short_hash}-{board}',
+                f'screenly/srly-ose-{service}:{git_short_hash}-{board}',
+            ])
 
         build_image(
             service,

tools/image_builder/utils.py

@@ -46,11 +46,16 @@ def get_build_parameters(build_target: str) -> dict:
     return default_build_parameters
 
 
-def get_docker_tag(git_branch: str, board: str) -> str:
+def get_docker_tag(git_branch: str, board: str, platform: str) -> str:
+    result_board = board
+
+    if platform == 'linux/arm64/v8' and board == 'pi4':
+        result_board = f'{board}-64'
+
     if git_branch == 'master':
-        return f'latest-{board}'
+        return f'latest-{result_board}'
     else:
-        return f'{git_branch}-{board}'
+        return f'{git_branch}-{result_board}'
 
 
 def generate_dockerfile(service: str, context: dict) -> None: