Keep produced artifacts under _build/ in ci-coverage

Signed-off-by: Joffrey F <joffrey@docker.com>

Author: shin-

Jenkinsfile

@@ -54,9 +54,9 @@ pipeline {
                         dir('src/github.com/docker/lunchbox') {
                             checkout scm
                             sh 'make ci-coverage'
-                            archiveArtifacts 'cov/all.out'
-                            archiveArtifacts 'cov/coverage.html'
-                            sh 'curl -s https://codecov.io/bash | bash -s - -f cov/all.out -K'
+                            archiveArtifacts '_build/ci-cov/all.out'
+                            archiveArtifacts '_build/ci-cov/coverage.html'
+                            sh 'curl -s https://codecov.io/bash | bash -s - -f _build/ci-cov/all.out -K'
                         }
                     }
                 }

Makefile

@@ -115,7 +115,7 @@ ci-test:
 ci-coverage:
 	docker build --target=build -t $(IMAGE_NAME)-cov:$(TAG) $(IMAGE_BUILD_ARGS) .
 	docker run --label $(COV_LABEL) $(IMAGE_NAME)-cov:$(TAG) make COMMIT=$(TAG) TAG=$(COMMIT) coverage
-	docker cp $$(docker ps -aql --filter label=$(COV_LABEL)):$(PKG_PATH)/_build/cov/ ./cov
+	mkdir -p ./_build && docker cp $$(docker ps -aql --filter label=$(COV_LABEL)):$(PKG_PATH)/_build/cov/ ./_build/ci-cov
 
 ci-bin-all:
 	docker build -t $(IMAGE_NAME)-bin-all:$(TAG) $(IMAGE_BUILD_ARGS) . --target=bin-build