gistfile1.txt

(sudo) docker pull mdillon/postgis:latest
Then just set your env vars:

export POSTGRES_IMAGE="mdillon/postgis" 
export POSTGRES_IMAGE_VERSION="latest"
Then you just use the plugin to create a new database.

CREATE EXTENSION postgis;
Click the Play button in the toolbar (or press F5) to “Execute the query.”

Now confirm that PostGIS is installed by running a PostGIS function:

SELECT postgis_full_version();