1/1/2024 0 Comments Running postgres in dockerThis is the password that you use to connect to the database when it is running. e POSTGRES_PASSWORD=mysecretpassword is passing in an environment variable with the name of POSTGRES_PASSWORD, and a value of mysecretpassword. You can change this to anything you’d like to make your containers easier to identify. name some-postgres is giving our new container a name of some-postgres. You can read more about it here if you would like: docker run reference. This command runs an image inside of a container. docker run is the command we are running. There’s a lot here, so let’s break this down. The command to run the docker image is:ĭocker run -name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d -p 5432:5432 postgres Next you just need to run the image and you’re all set. If you want to pull an older version, for example 14.6, use docker pull postgres:14.6 Run the Docker Image This will pull the latest Postgres docker image onto your computer.īy default the command above will pull the latest image. Open up a terminal and run the command docker pull postgres. As of this writing the latest version of Postgres is 15.1. The first thing you’ll need to do is pull the docker image you want to use. Most of the setup and instructions I’m showing can be found at the docker hub page for Postgres. In Docker this is known as a volume.Learn how to run Postgres in Docker! Pull Docker Image Firstly we need to create the persistent storage. Let’s start building a “real world” Postgres container. To make it accessible we need to forward a host operating system port to the container port. A database is no use if it can’t be accessed. Port forwarding from host to container: The container network is isolated, making it inaccessible from the outside world. To be a working database, we need to add a persistent filesystem to the container. This is not suitable for database systems. What this means is whenever we restart a terminated or deleted container, it will get an all-new, fresh filesystem and all previous data will be wiped clean.
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