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ci: install buildx and use docker buildx build --push

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The Dockerfile uses `--mount=type=cache` which requires BuildKit.
The static docker tarball only ships the CLI, so the plugin has to
be installed separately. Also flip the build step to
`docker buildx build --push` so build and push happen in one pass
instead of two (avoids the intermediate local-daemon load).
This commit is contained in:
Graham McIntire 2026-04-18 15:21:30 -05:00
parent 508834633e
commit 5a25c6d649
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GPG key ID: F4ABF488E6029E59
1 changed files with 15 additions and 7 deletions
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22
.forgejo/workflows/build.yaml
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@ -22,19 +22,27 @@ jobs:
- name: Checkout code - name: Checkout code
uses: https://github.com/actions/checkout@v4 uses: https://github.com/actions/checkout@v4
- name: Install Docker CLI - name: Install Docker CLI and buildx
run: | run: |
# Dodge apt entirely — the runner image's bookworm repos have been # Dodge apt entirely — the runner image's bookworm repos have been
# failing GPG verification with "At least one invalid signature". # failing GPG verification with "At least one invalid signature".
# The static Docker client binary talks to the host's daemon socket # The static Docker client binary talks to the host's daemon socket
# that act_runner mounts into the job container, which is all we # that act_runner mounts into the job container. buildx is needed
# need for `docker build` / `docker push`. # separately because the Dockerfile uses `--mount=type=cache`,
# which is a BuildKit-only feature.
curl -fsSL -o /tmp/docker.tgz \ curl -fsSL -o /tmp/docker.tgz \
https://download.docker.com/linux/static/stable/x86_64/docker-27.5.1.tgz https://download.docker.com/linux/static/stable/x86_64/docker-27.5.1.tgz
tar xzf /tmp/docker.tgz -C /tmp tar xzf /tmp/docker.tgz -C /tmp
install -m 0755 /tmp/docker/docker /usr/local/bin/docker install -m 0755 /tmp/docker/docker /usr/local/bin/docker
rm -rf /tmp/docker /tmp/docker.tgz rm -rf /tmp/docker /tmp/docker.tgz
mkdir -p /usr/libexec/docker/cli-plugins
curl -fsSL -o /usr/libexec/docker/cli-plugins/docker-buildx \
https://github.com/docker/buildx/releases/download/v0.19.3/buildx-v0.19.3.linux-amd64
chmod +x /usr/libexec/docker/cli-plugins/docker-buildx
docker --version docker --version
docker buildx version
- name: Generate image tag - name: Generate image tag
id: tag id: tag
@ -52,8 +60,8 @@ jobs:
IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}" IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
TAG="${{ steps.tag.outputs.tag }}" TAG="${{ steps.tag.outputs.tag }}"
BUILD_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ") BUILD_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
docker build \ docker buildx build \
--build-arg BUILD_TIMESTAMP="${BUILD_TIMESTAMP}" \ --build-arg BUILD_TIMESTAMP="${BUILD_TIMESTAMP}" \
-t "${IMAGE}:${TAG}" -t "${IMAGE}:latest" . -t "${IMAGE}:${TAG}" -t "${IMAGE}:latest" \
docker push "${IMAGE}:${TAG}" --push \
docker push "${IMAGE}:latest" .