Step Snap 1 [Run Docker in Ubuntu System]:

docker run -it \\
-e POSTGRES_USER="root" \\
-e POSTGRES_PASSWORD="root" \\
-e POSTGRES_DB="ny_taxi" \\
-v /ny_taxi_postgres_data:/var/lib/postgresql/data \\
-p 5432:5432 \\
postgres:13

Here are more content about how we could use docker command-line option correctly:

Basic Options

• a, --attach: Attach to STDIN, STDOUT, or STDERR
• d, --detach: Run container in background (daemon mode)
• i, --interactive: Keep STDIN open
• t, --tty: Allocate a pseudo-TTY
• -name: Assign a name to the container

Configuration

• e, --env: Set environment variables
• -env-file: Read environment variables from a file
• u, --user: Username or UID
• w, --workdir: Working directory inside the container
• -entrypoint: Override the default ENTRYPOINT

Network Settings

• p, --publish: Publish container's port(s) to the host
• P, --publish-all: Publish all exposed ports
• -network: Connect container to a network
• h, --hostname: Container host name