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Update postgres with note about Unix socket #1298

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Sep 4, 2018
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Update postgres with note about Unix socket #1298

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2 changes: 1 addition & 1 deletion postgres/content.md
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Expand Up @@ -153,7 +153,7 @@ 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).
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). Also, as of [docker-library/postgres#440](https://github.com/docker-library/postgres/pull/440), the temporary daemon started for these initialization scripts listens only on the Unix socket, so any `psql` usage should drop the hostname portion (see [docker-library/postgres#474 (comment)](https://github.com/docker-library/postgres/issues/474#issuecomment-416914741) for example).

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`:

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