Add Run A Basic PostgreSQL Server In Docker as a Docker TIL

docker/run-a-basic-postgresql-server-in-docker.md

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+# Run A Basic PostgreSQL Server In Docker
+
+Here is a basic `docker-compose.yml` file for spinning up a Docker container
+that runs a PostgreSQL server on port 5432. This is what I use to create a
+locally-running PostgreSQL server that lives inside a docker container.
+
+```yaml
+version: "3.7"
+services:
+  postgres:
+    image: postgres:latest
+    restart: always
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+      - POSTGRES_DB=postgres
+    ports:
+      - "5432:5432"
+    volumes:
+      - ./postgres-data:/var/lib/postgresql/data
+```
+
+To create the docker container and start it up, run the following command from
+the same directory where you put this file:
+
+```bash
+$ docker compose up
+```
+
+This command knows to look for the `docker-compose.yml` file though you can
+always be explicit about the file with the `-f` option.
+
+This configuration points at `postgres:latest` which currently is `16.1`. To
+run a different major version, you can change the `image` to something like
+`postgres:15`. See [Docker Hub](https://hub.docker.com/_/postgres) for more
+options.