feat: adding option to customize the dart version on the build brick (#670)

Author: erickzanardo

bricks/dart_frog_prod_server/__brick__/build/Dockerfile

@@ -1,6 +1,6 @@
 # Official Dart image: https://hub.docker.com/_/dart
 # Specify the Dart SDK base image version using dart:<version> (ex: dart:2.17)
-FROM dart:stable AS build
+FROM dart:{{dartVersion}} AS build
 
 WORKDIR /app
 
@@ -28,4 +28,4 @@ COPY --from=build /app/bin/server /app/bin/
 {{#serveStaticFiles}}COPY --from=build /app/public /public/{{/serveStaticFiles}}
 
 # Start server.
-CMD ["/app/bin/server"]
+CMD ["/app/bin/server"]

bricks/dart_frog_prod_server/brick.yaml

@@ -4,3 +4,10 @@ version: 0.1.0+1
 
 environment:
   mason: ">=0.1.0-dev <0.1.0"
+
+vars:
+  dartVersion:
+    type: string
+    description: Dart version to be used in the generated Dockerfile.
+    default: stable
+    prompt: Dart version?

bricks/dart_frog_prod_server/hooks/pre_gen.dart

@@ -93,5 +93,6 @@ Future<void> preGen(
     'invokeCustomEntrypoint': configuration.invokeCustomEntrypoint,
     'invokeCustomInit': configuration.invokeCustomInit,
     'pathDependencies': await getPathDependencies(projectDirectory),
+    'dartVersion': context.vars['dartVersion'],
   };
 }

bricks/dart_frog_prod_server/hooks/test/pre_gen_test.dart

@@ -38,7 +38,8 @@ void main() {
 
     setUp(() {
       logger = _MockLogger();
-      context = _FakeHookContext(logger: logger);
+      context = _FakeHookContext(logger: logger)
+        ..vars['dartVersion'] = 'stable';
 
       when(() => logger.progress(any())).thenReturn(_MockProgress());
     });
@@ -217,7 +218,8 @@ dev_dependencies:
           'serveStaticFiles': false,
           'invokeCustomEntrypoint': true,
           'invokeCustomInit': false,
-          'pathDependencies': <String>[]
+          'pathDependencies': <String>[],
+          'dartVersion': 'stable',
         }),
       );
     });
@@ -249,7 +251,8 @@ dev_dependencies:
           'serveStaticFiles': false,
           'invokeCustomEntrypoint': false,
           'invokeCustomInit': true,
-          'pathDependencies': <String>[]
+          'pathDependencies': <String>[],
+          'dartVersion': 'stable',
         }),
       );
     });
@@ -383,6 +386,7 @@ dev_dependencies:
             'invokeCustomEntrypoint': false,
             'invokeCustomInit': false,
             'pathDependencies': <String>[],
+            'dartVersion': 'stable',
           }),
         );
       },