Log in to DockerHub to increase rate limit

Closes gh-295

Author: wilkinsona

ci/pipeline.yml

@@ -21,6 +21,9 @@ anchors:
     ARTIFACTORY_SERVER: ((artifactory-server))
     ARTIFACTORY_USERNAME: ((artifactory-username))
     ARTIFACTORY_PASSWORD: ((artifactory-password))
+  docker-hub-task-params: &docker-hub-task-params
+    DOCKER_HUB_USERNAME: ((docker-hub-username))
+    DOCKER_HUB_PASSWORD: ((docker-hub-password))
 resource_types:
 - name: artifactory-resource
   type: registry-image
@@ -114,6 +117,7 @@ jobs:
     timeout: ((task-timeout))
     file: git-repo/ci/tasks/build-project.yml
     params:
+      <<: *docker-hub-task-params
       BRANCH: ((branch))
   - put: artifactory-repo
     params:
@@ -158,6 +162,7 @@ jobs:
     image: ci-image
     file: git-repo/ci/tasks/stage.yml
     params:
+      <<: *docker-hub-task-params
       RELEASE_TYPE: M
   - put: artifactory-repo
     params:
@@ -176,6 +181,7 @@ jobs:
     image: ci-image
     file: git-repo/ci/tasks/stage.yml
     params:
+      <<: *docker-hub-task-params
       RELEASE_TYPE: RC
   - put: artifactory-repo
     params:
@@ -194,6 +200,7 @@ jobs:
     image: ci-image
     file: git-repo/ci/tasks/stage.yml
     params:
+      <<: *docker-hub-task-params
       RELEASE_TYPE: RELEASE
   - put: artifactory-repo
     params:

ci/scripts/common.sh

@@ -1,4 +1,9 @@
 source /opt/concourse-java.sh
 
 setup_symlinks
+
+if [[ -n $DOCKER_HUB_USERNAME ]]; then
+	docker login -u $DOCKER_HUB_USERNAME -p $DOCKER_HUB_PASSWORD
+fi
+
 cleanup_maven_repo "io.spring.javaformat"