Renamed Runner Dockerfiles (#1248)

Renamed the runner dockerfiles so that we have proper syntax highlighting for them, as well as a consistent way to map from the image name to the dockerfile. Added a `.dockerignore` file to avoid uploading things to the daemon that we never use.

runner/.dockerignore

@@ -0,0 +1,2 @@
+*.dockerfile
+Makefile

runner/Makefile

@@ -25,8 +25,18 @@ else
 endif
 
 docker-build-ubuntu:
-	docker build --build-arg TARGETPLATFORM=${TARGETPLATFORM} --build-arg RUNNER_VERSION=${RUNNER_VERSION} --build-arg DOCKER_VERSION=${DOCKER_VERSION} -t ${NAME}:${TAG} .
-	docker build --build-arg TARGETPLATFORM=${TARGETPLATFORM} --build-arg RUNNER_VERSION=${RUNNER_VERSION} --build-arg DOCKER_VERSION=${DOCKER_VERSION} -t ${DIND_RUNNER_NAME}:${TAG} -f Dockerfile.dindrunner .
+	docker build \
+	  --build-arg TARGETPLATFORM=${TARGETPLATFORM} \
+	  --build-arg RUNNER_VERSION=${RUNNER_VERSION} \
+	  --build-arg DOCKER_VERSION=${DOCKER_VERSION} \
+	  -f actions-runner.dockerfile \
+	  -t ${NAME}:${TAG} .
+	docker build \
+	  --build-arg TARGETPLATFORM=${TARGETPLATFORM} \
+	  --build-arg RUNNER_VERSION=${RUNNER_VERSION} \
+	  --build-arg DOCKER_VERSION=${DOCKER_VERSION} \
+	  -f actions-runner-dind.dockerfile \
+	  -t ${DIND_RUNNER_NAME}:${TAG} .
 
 docker-push-ubuntu:
 	docker push ${NAME}:${TAG}
@@ -36,17 +46,17 @@ docker-buildx-ubuntu:
 	export DOCKER_CLI_EXPERIMENTAL=enabled ;\
     export DOCKER_BUILDKIT=1
 	@if ! docker buildx ls | grep -q container-builder; then\
-		docker buildx create --platform ${PLATFORMS} --name container-builder --use;\
+	  docker buildx create --platform ${PLATFORMS} --name container-builder --use;\
 	fi
 	docker buildx build --platform ${PLATFORMS} \
-		--build-arg RUNNER_VERSION=${RUNNER_VERSION} \
-		--build-arg DOCKER_VERSION=${DOCKER_VERSION} \
-		-t "${NAME}:${TAG}" \
-		-f Dockerfile \
-		. ${PUSH_ARG}
+	  --build-arg RUNNER_VERSION=${RUNNER_VERSION} \
+	  --build-arg DOCKER_VERSION=${DOCKER_VERSION} \
+	  -f actions-runner.dockerfile \
+	  -t "${NAME}:${TAG}" \
+	  . ${PUSH_ARG}
 	docker buildx build --platform ${PLATFORMS} \
-		--build-arg RUNNER_VERSION=${RUNNER_VERSION} \
-		--build-arg DOCKER_VERSION=${DOCKER_VERSION} \
-		-t "${DIND_RUNNER_NAME}:${TAG}" \
-		-f Dockerfile.dindrunner \
-		. ${PUSH_ARG}
+	  --build-arg RUNNER_VERSION=${RUNNER_VERSION} \
+	  --build-arg DOCKER_VERSION=${DOCKER_VERSION} \
+	  -f actions-runner-dind.dockerfile \
+	  -t "${DIND_RUNNER_NAME}:${TAG}" \
+	  . ${PUSH_ARG}