zzstoatzz.io / prefect-server
prefect server in zig
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prefect-server / docs / docker.md
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docker#

registry#

images are published to atcr.io - a distributed container registry built on AT Protocol.

atcr.io/zzstoatzz.io/prefect-server:latest

publishing#

just docker-publish           # push :latest
just docker-publish v0.1.0    # push specific tag

requires authentication via docker-credential-atcr:

# install credential helper
curl -fsSL https://github.com/mary-ext/atcr/releases/latest/download/docker-credential-atcr-darwin-arm64 \
  -o /usr/local/bin/docker-credential-atcr && chmod +x /usr/local/bin/docker-credential-atcr

# add to ~/.docker/config.json
# "credHelpers": { "atcr.io": "atcr" }

# first push triggers browser auth
ATCR_AUTO_AUTH=1 docker push atcr.io/zzstoatzz.io/prefect-server:latest

CI (future)#

ATCR.io uses device authorization (browser-based) for initial auth, then stores a device token:

atcr_device_<random>

potential CI approach (not yet tested):

  1. authenticate locally to generate device token
  2. extract token: docker-credential-atcr get <<< "atcr.io"
  3. store as CI secret (e.g., ATCR_TOKEN)
  4. in CI, write credentials before push: 
    echo '{"ServerURL":"atcr.io","Username":"zzstoatzz.io","Secret":"$ATCR_TOKEN"}' | docker-credential-atcr store

open questions:

  • token expiration/rotation policy
  • whether ATCR.io will add app passwords or CI-specific auth
  • official GitHub Actions support

check atcr.io for updates on CI/CD support.

image details#

  • base: alpine:3.20
  • size: ~47MB
  • healthcheck: curl -f http://localhost:4200/api/health
  • multi-arch: amd64, arm64