How to deploy and run PostgreSQL inside a Docker container?

To deploy and run PostgreSQL in a Docker container, you can use the official PostgreSQL image from Docker Hub.

Example command to start the container:

docker run --name my-postgres -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -d postgres

Explanation:

• --name my-postgres — container name.
• -e POSTGRES_PASSWORD=mysecretpassword — sets the password for the postgres user.
• -p 5432:5432 — forwards the port from the container to the host for database access.
• -d — runs the container in detached mode.

After starting, you can connect to the database at localhost:5432 with the user postgres and the specified password.

For data persistence, it is recommended to use Docker volumes, for example:

docker run --name my-postgres -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -v pgdata:/var/lib/postgresql/data -d postgres