PostgreSQL docker image based on Alpine Linux
This repo builds a docker image that accepts the same env vars as the
official postgres build but
with a much smaller footprint. It achieves that by basing itself off the great
alpine docker image by GliderLabs.
$ docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE alpine-postgres latest 82d0ddb748fd About an hour ago 23.87 MB gliderlabs/alpine 3.3 1e46923a8af6 12 days ago 4.794 MB percona latest 70588d0c4cd4 4 weeks ago 308.6 MB postgres latest 6d6a71f8528e 4 weeks ago 265.1 MB
$ make build
This image is published on DockerHub as
docker pull kiasaki/alpine-postgres.
This image works in the same way the official
postgres docker image work.
It's documented on DockerHub in it's README: https://hub.docker.com/_/postgres/.
For example, you can start a basic PostgreSQL server, protected by a password,
listening on port 5432 by running the following:
$ docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d alpine-postgres
Next, you can start you app's container while linking it to the PostgreSQL
container you just created giving it access to it.
$ docker run --name some-app --link some-postgres:postgres -d application-that-uses-postgres
Your app will now be able to access
POSTGRES_PORT_5432_TCP_PORT environment variables.
I have a question. Why should I need the gosu project? could you explain this, please?