fix: Use posix path for dockerfile path passed to docker build API

samcli/lib/build/app_builder.py

@@ -404,7 +404,7 @@ def _build_lambda_image(self, function_name: str, metadata: Dict, architecture:
 
         build_args = {
             "path": str(docker_context_dir),
-            "dockerfile": dockerfile,
+            "dockerfile": str(pathlib.Path(dockerfile).as_posix()),
             "tag": docker_tag,
             "buildargs": docker_build_args,
             "platform": get_docker_platform(architecture),

samcli/lib/samlib/resource_metadata_normalizer.py

@@ -186,7 +186,7 @@ def _extract_image_asset_metadata(metadata):
         asset_path = Path(metadata.get(ASSET_PATH_METADATA_KEY, ""))
         dockerfile_path = Path(metadata.get(ASSET_DOCKERFILE_PATH_KEY), "")
         return {
-            SAM_METADATA_DOCKERFILE_KEY: str(dockerfile_path),
+            SAM_METADATA_DOCKERFILE_KEY: str(dockerfile_path.as_posix()),
             SAM_METADATA_DOCKER_CONTEXT_KEY: str(asset_path),
             SAM_METADATA_DOCKER_BUILD_ARGS_KEY: metadata.get(ASSET_DOCKERFILE_BUILD_ARGS_KEY, {}),
         }

tests/integration/buildcmd/test_build_cmd.py

@@ -274,6 +274,40 @@ def test_intermediate_container_deleted(self, dockerfile, expected):
             _num_of_containers_before_build, _num_of_containers_after_build, "Intermediate containers are not removed"
         )
 
+    @parameterized.expand(
+        [
+            ("feature_phi\\Dockerfile", {"phi": "1.62"}),
+            ("feature_pi\\Dockerfile", {"pi": "3.14"}),
+        ]
+    )
+    @pytest.mark.flaky(reruns=3)
+    @skipIf(not IS_WINDOWS, "Skipping passing Windows path for dockerfile path on non Windows platform")
+    def test_windows_dockerfile_present_sub_dir(self, dockerfile, expected):
+        _tag = f"{random.randint(1, 100)}"
+        overrides = {
+            "Runtime": "3.9",
+            "Handler": "main.handler",
+            "DockerFile": dockerfile,
+            "Tag": _tag,
+        }
+        cmdlist = self.get_command_list(use_container=False, parameter_overrides=overrides)
+
+        LOG.info("Running Command: ")
+        LOG.info(cmdlist)
+        command_result = run_command(cmdlist, cwd=self.working_dir)
+        self.assertEqual(command_result.process.returncode, 0)
+
+        self._verify_image_build_artifact(
+            self.built_template,
+            self.FUNCTION_LOGICAL_ID_IMAGE,
+            "ImageUri",
+            f"{self.FUNCTION_LOGICAL_ID_IMAGE.lower()}:{_tag}",
+        )
+
+        self._verify_invoke_built_function(
+            self.built_template, self.FUNCTION_LOGICAL_ID_IMAGE, self._make_parameter_override_arg(overrides), expected
+        )
+
 
 @skipIf(
     # Hits public ECR pull limitation, move it to canary tests
@@ -546,6 +580,47 @@ def test_cdk_app_with_default_requirements(self):
         )
 
 
+@skipIf(
+    # Hits public ECR pull limitation, move it to canary tests
+    SKIP_DOCKER_TESTS,
+    "Skip build tests that requires Docker in CI environment",
+)
+@parameterized_class(
+    (
+        "template",
+        "FUNCTION_LOGICAL_ID",
+        "overrides",
+        "use_container",
+        "prop",
+    ),
+    [
+        (
+            "cdk_v2_synthesized_template_image_function_shared_code.json",
+            "TestLambdaFunctionC089708A",
+            False,
+            False,
+            "Code.ImageUri",
+        ),
+    ],
+)
+class TestBuildCommandCDKPythonImageFunctionSharedCode(BuildIntegPythonBase):
+    @pytest.mark.flaky(reruns=3)
+    def test_cdk_app_with_default_requirements(self):
+        expected = "Hello World"
+        cmdlist = self.get_command_list(use_container=self.use_container)
+        command_result = run_command(cmdlist, cwd=self.working_dir)
+        self.assertEqual(command_result.process.returncode, 0)
+
+        self._verify_image_build_artifact(
+            self.built_template,
+            self.FUNCTION_LOGICAL_ID,
+            self.prop,
+            f"{self.FUNCTION_LOGICAL_ID.lower()}:latest",
+        )
+
+        self._verify_invoke_built_function(self.built_template, self.FUNCTION_LOGICAL_ID, {}, expected)
+
+
 class TestBuildCommand_PythonFunctions_With_Specified_Architecture(BuildIntegPythonBase):
     template = "template_with_architecture.yaml"
 

tests/integration/testdata/buildcmd/asset.31c00c94a012bbfa9021c9ef3d6589c251d6e9743f9cf6d38694d29e7372c428/myimage/Dockerfile

@@ -0,0 +1,7 @@
+ARG BASE_RUNTIME
+
+FROM public.ecr.aws/lambda/python:$BASE_RUNTIME
+
+COPY myimage/main.py $FUNCTION_DIR
+
+CMD [ "main.handler" ]

tests/integration/testdata/buildcmd/asset.31c00c94a012bbfa9021c9ef3d6589c251d6e9743f9cf6d38694d29e7372c428/myimage/main.py

@@ -0,0 +1,2 @@
+def handler(event, context):
+    return "Hello World"