Update build to be multiarch

.gitlab-ci.yml

@@ -1,19 +1,27 @@
-image: docker:latest
-
 stages:
 - build
+- build-manifest
 
 variables:
-  VERSION: latest-${ARCH}
-  CACHETAG: build-${ARCH}
+  VERSION: latest
   DOCKER_HOST: tcp://docker:2375
+  VERSIONARCH: ${VERSION}-${ARCH}
 
+cache:
+  key: ${CI_JOB_NAME_SLUG}-${CI_COMMIT_REF_SLUG}
+  paths:
+  - build-cache
+
+image: docker:latest
 services:
 - docker:dind
 
 before_script:
-- docker info
-- docker version
+- if [ ! -d build-cache ]; then mkdir build-cache; fi
+- docker info && docker version
 - echo "$CI_JOB_TOKEN" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
 
-include: .gitlab-docker.yml
+include:
+- .gitlab-docker-x86_64.yml
+# .gitlab-docker-armv7l.yml
+- .gitlab-docker-manifest.yml

.gitlab-docker-armv7l.yml

@@ -0,0 +1,16 @@
+armv7l:build:
+  variables:
+    ARCH: armv7l
+  stage: build
+  script:
+  - if [ -f init ]; then chmod 500 init; fi
+  - ([ -z "$REFRESH" -a -f build-cache/${CI_COMMIT_REF_SLUG} ]) && docker load < build-cache/${CI_COMMIT_REF_SLUG} || true
+  - rm build-cache/* || true
+  - docker build ${HTTP_PROXY:+--build-arg HTTP_PROXY=${HTTP_PROXY}} --cache-from ${CI_REGISTRY_IMAGE}:${VERSIONARCH} -t ${CI_REGISTRY_IMAGE}:${VERSIONARCH} .
+  - docker push ${CI_REGISTRY_IMAGE}:${VERSIONARCH}
+  - docker save ${CI_REGISTRY_IMAGE}:${VERSIONARCH} > build-cache/${CI_COMMIT_REF_SLUG}
+  tags:
+  - docker
+  - armv7l
+  only:
+  - master

.gitlab-docker-manifest.yml

@@ -0,0 +1,10 @@
+x86_64:build-manifest:
+  stage: build-manifest
+  script:
+  - docker manifest create ${CI_REGISTRY_IMAGE}:${VERSION} ${CI_REGISTRY_IMAGE}:${VERSION}-x86_64 #${CI_REGISTRY_IMAGE}:${VERSION}-armv7l
+  - docker manifest push --purge ${CI_REGISTRY_IMAGE}:${VERSION}
+  tags:
+  - docker
+  - x86_64
+  only:
+  - master

.gitlab-docker-x86_64.yml

@@ -0,0 +1,16 @@
+x86_64:build:
+  variables:
+    ARCH: x86_64
+  stage: build
+  script:
+  - if [ -f init ]; then chmod 500 init; fi
+  - ([ -z "$REFRESH" -a -f build-cache/${CI_COMMIT_REF_SLUG} ]) && docker load < build-cache/${CI_COMMIT_REF_SLUG} || true
+  - rm build-cache/* || true
+  - docker build ${HTTP_PROXY:+--build-arg HTTP_PROXY=${HTTP_PROXY}} --cache-from ${CI_REGISTRY_IMAGE}:${VERSIONARCH} -t ${CI_REGISTRY_IMAGE}:${VERSIONARCH} .
+  - docker push ${CI_REGISTRY_IMAGE}:${VERSIONARCH}
+  - docker save ${CI_REGISTRY_IMAGE}:${VERSIONARCH} > build-cache/${CI_COMMIT_REF_SLUG}
+  tags:
+  - docker
+  - x86_64
+  only:
+  - master

.gitlab-docker.yml

@@ -1,33 +0,0 @@
-armv7l:build:
-  variables:
-    ARCH: armv7l
-  stage: build
-  image: docker:latest
-  script:
-  - if [ -f init ]; then chmod 500 init; fi
-  - ([ -z "$REFRESH" ] && docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG}) || echo "true"
-  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
-  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
-  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
-  tags:
-  - docker
-  - armv7l
-  only:
-  - master
-
-x86_64:build:
-  variables:
-    ARCH: x86_64
-  stage: build
-  image: docker:latest
-  script:
-  - if [ -f init ]; then chmod 500 init; fi
-  - ([ -z "$REFRESH" ] && docker pull ${CI_REGISTRY_IMAGE}:${CACHETAG}) || echo "true"
-  - docker build --cache-from ${CI_REGISTRY_IMAGE}:${CACHETAG} -t ${CI_REGISTRY_IMAGE}:${VERSION} -t ${CI_REGISTRY_IMAGE}:${CACHETAG} .
-  - docker push ${CI_REGISTRY_IMAGE}:${VERSION}
-  - docker push ${CI_REGISTRY_IMAGE}:${CACHETAG}
-  tags:
-  - docker
-  - x86_64
-  only:
-  - master