druid/distribution/docker/README.md

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## Build

From the root of the repo, run `docker build -t druid:tag -f distribution/docker/Dockerfile .`

## Run

Edit `environment` to suite. Run 'docker-compose -f distribution/docker/docker-compose.yml up`

## mysql database connector

This image contains solely the postgres metadata database connector. If you need
the mysql metadata storage connector, consider adding these lines before the `addgroup`
run-command.

```
RUN wget -O /opt/druid/extensions/mysql-metadata-storage/mysql-connector-java-5.1.38.jar http://central.maven.org/maven2/mysql/mysql-connector-java/5.1.38/mysql-connector-java-5.1.38.jar \
 && sha256sum --ignore-missing -c /src/distribution/docker/sha256sums.txt \
 && ln -s /opt/druid/extensions/mysql-metadata-storage/mysql-connector-java-5.1.38.jar /opt/druid/lib
```

Alternatively, cd src/distribution/docker; docker build -t druid:mysql --build-arg DRUID_RELEASE=upstream -f Dockerfile.mysql .

where `upstream` is the version to use as the base (e.g. druid:0.14.0 from Dockerhub)