Simplify controllers local build system

Dockerfile.local

@@ -29,17 +29,22 @@ ENV VERSION_PKG=github.com/aws-controllers-k8s/$service_alias-controller/pkg/ver
 # Copy the Go Modules manifests and LICENSE/ATTRIBUTION
 COPY $service_alias-controller/LICENSE $work_dir/LICENSE
 COPY $service_alias-controller/ATTRIBUTION.md $work_dir/ATTRIBUTION.md
-# use local mod files
-COPY $service_alias-controller/go.local.mod $work_dir/go.local.mod
-COPY $service_alias-controller/go.local.sum $work_dir/go.local.sum
+# Copy the go.mod and go.sum files for the service controller
 COPY $service_alias-controller/go.mod $work_dir/go.mod
+COPY $service_alias-controller/go.sum $work_dir/go.sum
 
-# for local development, copy local runtime repo
+# Copy local runtime code to the container
 COPY runtime/pkg $work_dir/../runtime/pkg
 COPY runtime/apis $work_dir/../runtime/apis
 COPY runtime/go.mod $work_dir/../runtime/go.mod
 COPY runtime/go.sum $work_dir/../runtime/go.sum
 
+# Replace the runtime module with the local runtime code
+RUN echo "replace github.com/aws-controllers-k8s/runtime => ../runtime" >> $work_dir/go.mod
+
+# TODO: Add a mechanism to inject more replacements for the go.mod file.
+# For now we don't have any real use case for this.
+
 # cache deps before building and copying source so that we don't need to re-download as much
 # and so that source changes don't invalidate our downloaded layer
 WORKDIR $work_dir/../runtime
@@ -58,7 +63,6 @@ RUN GIT_VERSION=$service_controller_git_version && \
     go build -ldflags="-X ${VERSION_PKG}.GitVersion=${GIT_VERSION} \
     -X ${VERSION_PKG}.GitCommit=${GIT_COMMIT} \
     -X ${VERSION_PKG}.BuildDate=${BUILD_DATE}" \
-    -modfile="${work_dir}/go.local.mod" \
     -a -o $work_dir/bin/controller $work_dir/cmd/controller/main.go
 
 FROM $base_image

Makefile

@@ -17,10 +17,9 @@ GO_LDFLAGS=-ldflags "-X $(IMPORT_PATH)/pkg/version.Version=$(VERSION) \
 # We need to use the codegen tag when building and testing because the
 # aws-sdk-go/private/model/api package is gated behind a build tag "codegen"...
 GO_CMD_FLAGS=-tags codegen
-GO_CMD_LOCAL_FLAGS=-modfile=go.local.mod $(GO_CMD_FLAGS)
 
-.PHONY: all local-build-ack-generate build-ack-generate local-build-controller \
-	build-controller test local-test build-controller-image \
+.PHONY: all build-ack-generate test \
+	build-controller build-controller-image \
 	local-build-controller-image lint-shell
 
 all: test
@@ -30,20 +29,13 @@ build-ack-generate:	## Build ack-generate binary
 	@go build ${GO_CMD_FLAGS} ${GO_LDFLAGS} -o bin/ack-generate cmd/ack-generate/main.go
 	@echo "ok."
 
-local-build-ack-generate:	## Build ack-generate binary using the local go.mod
-	@echo -n "building ack-generate ... "
-	@go build ${GO_CMD_LOCAL_FLAGS} ${GO_LDFLAGS} -o bin/ack-generate cmd/ack-generate/main.go
-	@echo "ok."
-
 build-controller: build-ack-generate ## Generate controller code for SERVICE
 	@./scripts/install-controller-gen.sh
 	@echo "==== building $(AWS_SERVICE)-controller ===="
 	@./scripts/build-controller.sh $(AWS_SERVICE)
 	@echo "==== building $(AWS_SERVICE)-controller release artifacts ===="
 	@./scripts/build-controller-release.sh $(AWS_SERVICE)
 
-local-build-controller: local-build-ack-generate build-controller ## Generate controller code for SERVICE using the local go.mod
-
 build-controller-image: export LOCAL_MODULES = false
 build-controller-image:	## Build container image for SERVICE
 	@./scripts/build-controller-image.sh $(AWS_SERVICE)
@@ -55,9 +47,6 @@ local-build-controller-image:	## Build container image for SERVICE allowing loca
 test: 				## Run code tests
 	go test ${GO_CMD_FLAGS} ./...
 
-local-test:			## Run code tests using the local go.mod
-	go test ${GO_CMD_LOCAL_FLAGS} ./...
-
 lint-shell:	## Run linters against all of the bash scripts
 	@find . -type f -name "*.sh" | xargs shellcheck -e SC1091