Jesper Eneberg 315bf650d4 Update Dockerfile ...

* Removed `apk update`.
* Added `--no-cache` parameter. As of Alpine Linux 3.3 we can utilize the `--no-cache` option for apk. It allows us to install packages with an index that is updated and used on-the-fly and not cached locally. No need to run `apk update`, `apk add --update` and remove `/var/cache/apk/*` when done installing packages.
* Added postgres package so we can utilize pg_dump to dump tables and databases.

2018-04-26 00:00:05 +02:00

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