Vendor Auto-DevOps.gitlab-ci.yml with new proxy env vars passed through to docker

See https://gitlab.com/gitlab-org/gitlab-ci-yml/merge_requests/184

Thanks to @kinolaev for this contribution.

changelogs/unreleased/50243-auto-devops-behind-a-proxy.yml

+---
+title: Vendor Auto-DevOps.gitlab-ci.yml with new proxy env vars passed through to
+  docker
+merge_request: 21159
+author: kinolaev
+type: added

vendor/gitlab-ci-yml/Auto-DevOps.gitlab-ci.yml

@@ -720,10 +720,29 @@ rollout 100%:
 
     if [[ -f Dockerfile ]]; then
       echo "Building Dockerfile-based application..."
-      docker build -t "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG" .
+      docker build \
+        --build-arg HTTP_PROXY="$HTTP_PROXY" \
+        --build-arg http_proxy="$http_proxy" \
+        --build-arg HTTPS_PROXY="$HTTPS_PROXY" \
+        --build-arg https_proxy="$https_proxy" \
+        --build-arg FTP_PROXY="$FTP_PROXY" \
+        --build-arg ftp_proxy="$ftp_proxy" \
+        --build-arg NO_PROXY="$NO_PROXY" \
+        --build-arg no_proxy="$no_proxy" \
+        -t "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG" .
     else
       echo "Building Heroku-based application using gliderlabs/herokuish docker image..."
-      docker run -i -e BUILDPACK_URL --name="$CI_CONTAINER_NAME" -v "$(pwd):/tmp/app:ro" gliderlabs/herokuish /bin/herokuish buildpack build
+      docker run -i \
+        -e BUILDPACK_URL \
+        -e HTTP_PROXY \
+        -e http_proxy \
+        -e HTTPS_PROXY \
+        -e https_proxy \
+        -e FTP_PROXY \
+        -e ftp_proxy \
+        -e NO_PROXY \
+        -e no_proxy \
+        --name="$CI_CONTAINER_NAME" -v "$(pwd):/tmp/app:ro" gliderlabs/herokuish /bin/herokuish buildpack build
       docker commit "$CI_CONTAINER_NAME" "$CI_APPLICATION_REPOSITORY:$CI_APPLICATION_TAG"
       docker rm "$CI_CONTAINER_NAME" >/dev/null
       echo ""