The 2020ip/postgres image provides a Docker container running Postgres 9.5 with the PLV8 1.4.8 add-on installed. This image is based on the official postgres image.
The container can be ran with:
docker run -p 5432:5432 --env POSTGRES_PASSWORD=myPassword --env POSTGRES_USER=postgres -d 2020ip/postgres
This image is based on the offical Postgres image, so see its documentation for all options. https://hub.docker.com/_/postgres/