Differences

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--- gitlab-ci-multiplatform [2021/01/08 08:08] – baumi
+++ gitlab-ci-multiplatform [2021/01/09 10:07] (current) – [Enable Emulators] baumi
@@ Line 1: / Line 1: @@
 ====== Gitlab CI MultiPlatform Build ======
-===== Enable Emulators =====
+===== Enable binary formats =====
-<code>
+<code bash>
-# docker run -it --rm --privileged tonistiigi/binfmt --install all
+$ docker run --rm --privileged tonistiigi/binfmt --install all
 {
   "supported": [
@@ Line 23: / Line 23: @@
   ]
 }
+</code>
+===== Create buildx enabled docker image for builds =====
+<file bash Dockerfile>
+ARG BUILDX_VERSION=0.4.2
+ARG DOCKER_VERSION=latest
+FROM alpine AS fetcher
+RUN apk add curl
+ARG BUILDX_VERSION
+RUN curl -L \
+  --output /docker-buildx \
+  "https://github.com/docker/buildx/releases/download/v${BUILDX_VERSION}/buildx-v${BUILDX_VERSION}.linux-amd64"
+RUN chmod a+x /docker-buildx
+ARG DOCKER_VERSION
+FROM docker:${DOCKER_VERSION}
+COPY --from=fetcher /docker-buildx /usr/lib/docker/cli-plugins/docker-buildx
+</file>
+Credits to [[https://github.com/jdrouet|Jérémie Drouet]]
+==== Build & push image ====
+<code bash>
+$ docker build --pull -t registry/docker-with-buildx .
+$ docker push registry/docker-with-buildx
 </code>
 ===== Switch to buildx in .gitlab-ci.yml =====
+Define CI_PLATFORMS variable in Settings / CI/CD:
+CI_PLATFORMS = linux/amd64,linux/arm/v7,...
 <file bash .gitlab-ci.yml>
-image: docker
+image: registry/docker-with-buildx
 services:
@@ Line 36: / Line 70: @@
   script:
     - docker login -u $CI_USER -p $CI_TOKEN $CI_REGISTRY
-    - export DOCKER_CLI_EXPERIMENTAL=enabled
-    - export DOCKER_BUILDKIT=1
     - docker buildx create --use
-    - docker buildx build --platform $CI_PLATFORMS --push --pull -t $CI_IMAGE .
+    - docker buildx build --platform $CI_PLATFORMS --push --pull -t $CI_REGISTRY_IMAGE .
 </file>
+{{tag>kb git}}