DOCKERHUB.md

GO Feature Flag Relay Proxy

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What is GO Feature Flag Relay Proxy?

The GO Feature Flag Relay Proxy retrieve your feature flag configuration file using thomaspoignant/go-feature-flag SDK and expose APIs to get your flags variations.
It lets a number of servers to connect to a single configuration file.

This can be useful if you want to use the same feature flags configuration file for frontend and backend, this allows to be language agnostic by using standard protocol.

For more information about GO Feature Flag Relay Proxy, please visit github.com/thomaspoignant/go-feature-flag.

Quick reference

• This default distribution is the official distribution for go-feature-flag.

• Where to file issues: https://github.com/thomaspoignant/go-feature-flag/issues/.

• Source are available in go-feature-flag repo.

• All versions are available in the tags.

• Release notes are available here.

How to use this image

go-feature-flag requires a configuration file to be used.

By default, we expect to have this configuration file in the /goff directory of the container and the file should be named goff-proxy.yaml.

The default port used for the service is 1031.

docker run \
  -v $(pwd)/goff-proxy.yaml:/goff/goff-proxy.yaml \
  gofeatureflag/go-feature-flag:latest

Test it locally

This is a small example on how to run go-feature-flag locally.

# Download an example of a basic configuration file.
curl https://raw.githubusercontent.com/thomaspoignant/go-feature-flag/main/cmd/relayproxy/testdata/dockerhub-example/goff-proxy.yaml -o goff-proxy.yaml

# Launch the container
docker run \
  -p 1031:1031 \
  -v $(pwd)/goff-proxy.yaml:/goff/goff-proxy.yaml \
  gofeatureflag/go-feature-flag:latest
  
# Call the API
curl -X 'POST' \
  'http://localhost:1031/v1/feature/flag-only-for-admin/eval'  -H 'accept: application/json'  -H 'Content-Type: application/json' \
  -d '{ "user": { "key": "[email protected]", "anonymous": true, "custom": { "admin": true, "email": "[email protected]" }}, "defaultValue": "false"}'

Supported tags and respective Dockerfile links

GO Feature Flag is publishing the following tags:

• latest, bookworm, v1, v1-bookworm

The numbered version (ex: v1, 1.29, etc ...) are using a distroless base image, ensuring a minimal image size and high security.

The version with -bookworm is using the bookworm debian-slim image as base, it allows extending it with more tools if needed.

License

View license information for the software contained in this image.

How can I contribute?

This project is open for contribution, see the contributor's guide for some helpful tips.