The smarleo/postgis image provides a Docker container running Postgres with PostGIS 2.4 installed.
This image is based on the official postgres image and provides variants for Postgres 10 image.
This image ensures that the default database created by the parent postgres image will have the following extensions installed:
postgispostgis_topologyfuzzystrmatchpostgis_tiger_geocoder
Unless -e POSTGRES_DB is passed to the container at startup time, this database will be named after the admin user (either postgres or the user specified with -e POSTGRES_USER). If you would prefer to use the older template database mechanism for enabling PostGIS, the image also provides a PostGIS-enabled template database called template_postgis.
In order to run a basic container capable of serving a PostGIS-enabled database, start a container as follows:
docker run --name some-postgis -e POSTGRES_PASSWORD=mysecretpassword -d mdillon/postgis
For more detailed instructions about how to start and control your Postgres container, see the documentation for the postgres image here.
Once you have started a database container, you can then connect to the database as follows:
docker run -it --link some-postgis:postgres --rm postgres \
sh -c 'exec psql -h "$POSTGRES_PORT_5432_TCP_ADDR" -p "$POSTGRES_PORT_5432_TCP_PORT" -U postgres'
See the PostGIS documentation for more details on your options for creating and using a spatially-enabled database.