Add .gitlab CI/CD configuration to build docker image

.gitlab-ci.yml

@@ -0,0 +1,31 @@
+stages:
+- build
+- build-manifest
+
+variables:
+  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:
+- if [ ! -d build-cache ]; then mkdir build-cache; fi
+- sed -ie s'/https/http/' /etc/apk/repositories
+- HTTP_PROXY=http://proxy.dege.lan:3128 apk add git curl
+- docker info && docker version
+# env|sort
+- echo "$CI_JOB_TOKEN" | docker login -u "$CI_REGISTRY_USER" "$CI_REGISTRY" --password-stdin
+
+include:
+- .gitlab-docker-x86_64.yml
+# .gitlab-docker-armv7l.yml
+# .gitlab-docker-arm64.yml
+- .gitlab-docker-manifest.yml

.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}-arm64 ${CI_REGISTRY_IMAGE}:${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 --build-arg HTTP_PROXY=http://proxy.dege.lan:3128 --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