Graham McIntire
d51f545ab7
Forgejo act_runner mounts the host docker socket into the job container; the daemon sometimes takes a beat to answer, which has been surfacing as intermittent "unable to connect to docker" failures on login. Gate the build on a `docker info` poll (up to 30s) so later steps don't race the socket, and wrap login + buildx push in a 3-try exponential-backoff (2s/4s/8s) so a transient registry hiccup doesn't require a manual workflow re-run.
118 lines
4.1 KiB
YAML
118 lines
4.1 KiB
YAML
name: Build and Push
|
|
|
|
on:
|
|
push:
|
|
branches:
|
|
- main
|
|
|
|
env:
|
|
REGISTRY: git.mcintire.me
|
|
IMAGE_NAME: graham/prop
|
|
|
|
concurrency:
|
|
group: ${{ github.workflow }}-${{ github.ref }}
|
|
cancel-in-progress: true
|
|
|
|
jobs:
|
|
build-and-push:
|
|
name: Build and Push Docker Image
|
|
runs-on: ubuntu-22.04
|
|
|
|
steps:
|
|
- name: Checkout code
|
|
uses: https://github.com/actions/checkout@v4
|
|
|
|
- name: Install Docker CLI and buildx
|
|
run: |
|
|
# Dodge apt entirely — the runner image's bookworm repos have been
|
|
# failing GPG verification with "At least one invalid signature".
|
|
# The static Docker client binary talks to the host's daemon socket
|
|
# that act_runner mounts into the job container. buildx is needed
|
|
# separately because the Dockerfile uses `--mount=type=cache`,
|
|
# which is a BuildKit-only feature.
|
|
curl -fsSL -o /tmp/docker.tgz \
|
|
https://download.docker.com/linux/static/stable/x86_64/docker-27.5.1.tgz
|
|
tar xzf /tmp/docker.tgz -C /tmp
|
|
install -m 0755 /tmp/docker/docker /usr/local/bin/docker
|
|
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 buildx version
|
|
|
|
- name: Wait for Docker daemon
|
|
run: |
|
|
# act_runner mounts the host docker socket into the job, but
|
|
# the daemon side sometimes takes a moment to answer. Poll
|
|
# `docker info` until it responds so the login/build steps
|
|
# below don't race the socket and fail with "unable to
|
|
# connect to docker".
|
|
for i in $(seq 1 30); do
|
|
docker info >/dev/null 2>&1 && exit 0
|
|
echo "Waiting for Docker daemon... ($i/30)"
|
|
sleep 1
|
|
done
|
|
echo "Docker daemon never became reachable" >&2
|
|
exit 1
|
|
|
|
- name: Generate image tag
|
|
id: tag
|
|
run: |
|
|
TIMESTAMP=$(date +%s)
|
|
SHORT_SHA=$(git rev-parse --short=7 HEAD | cut -c1-7)
|
|
TAG="main-${TIMESTAMP}-${SHORT_SHA}"
|
|
echo "tag=${TAG}" >> $GITHUB_OUTPUT
|
|
|
|
- name: Log in to container registry
|
|
run: |
|
|
# Exponential backoff (2s, 4s, 8s) around docker login to
|
|
# ride out transient registry blips without failing the
|
|
# whole workflow.
|
|
attempt=1
|
|
max_attempts=3
|
|
while : ; do
|
|
if echo "${{ secrets.REGISTRY_PASSWORD }}" | \
|
|
docker login "${{ secrets.REGISTRY_URL }}" \
|
|
-u "${{ secrets.REGISTRY_USER }}" \
|
|
--password-stdin; then
|
|
exit 0
|
|
fi
|
|
if [ "$attempt" -ge "$max_attempts" ]; then
|
|
echo "docker login failed after $attempt attempts" >&2
|
|
exit 1
|
|
fi
|
|
delay=$((2 ** attempt))
|
|
echo "docker login attempt $attempt failed; retrying in ${delay}s"
|
|
sleep "$delay"
|
|
attempt=$((attempt + 1))
|
|
done
|
|
|
|
- name: Build and push Docker image
|
|
run: |
|
|
IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
|
|
TAG="${{ steps.tag.outputs.tag }}"
|
|
BUILD_TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ")
|
|
|
|
attempt=1
|
|
max_attempts=3
|
|
while : ; do
|
|
if docker buildx build \
|
|
--build-arg BUILD_TIMESTAMP="${BUILD_TIMESTAMP}" \
|
|
-t "${IMAGE}:${TAG}" -t "${IMAGE}:latest" \
|
|
--push \
|
|
.; then
|
|
exit 0
|
|
fi
|
|
if [ "$attempt" -ge "$max_attempts" ]; then
|
|
echo "docker buildx build failed after $attempt attempts" >&2
|
|
exit 1
|
|
fi
|
|
delay=$((2 ** attempt))
|
|
echo "docker buildx build attempt $attempt failed; retrying in ${delay}s"
|
|
sleep "$delay"
|
|
attempt=$((attempt + 1))
|
|
done
|