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Merge pull request #848 from infosiftr/postgres-more-user 

Add an explicit note about initdb scripts being run as the "postgres" user now
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yosifkit 2017-02-28 15:59:57 -08:00 committed by GitHub
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@ -126,6 +126,8 @@ EOSQL
These initialization files will be executed in sorted name order as defined by the current locale, which defaults to `en_US.utf8`. Any `*.sql` files will be executed by `POSTGRES_USER`, which defaults to the `postgres` superuser. It is recommended that any `psql` commands that are run inside of a `*.sh` script be executed as `POSTGRES_USER` by using the `--username "$POSTGRES_USER"` flag. This user will be able to connect without a password due to the presence of `trust` authentication for Unix socket connections made inside the container.
Additionally, as of [docker-library/postgres#253](https://github.com/docker-library/postgres/pull/253), these initialization scripts are run as the `postgres` user (or as the "semi-arbitrary user" specified with the `--user` flag to `docker run`; see the section titled "Arbitrary `--user` Notes" for more details).
You can also extend the image with a simple `Dockerfile` to set a different locale. The following example will set the default locale to `de_DE.utf8`:
```dockerfile