In this guide we are going to explore how to run Postresql 14 locally with docker and docker compose. This can be helpful if you want to run Postgresql locally without installing it in your server or if you want to run multiple versions of Postgresql seamlessly.
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To follow along, ensure you have the following:
- Docker installed locally and permissions to use it to launch containers
- Docker compose is installed locally
- Basic knowledge of the command line
Using the docker run command
We are going to use the
docker run command to achieve our goal. The version of postgres that we want is
postgres:14-alpine - a minimal version of Postgres container.
In the above command:
-dinstructs docker container to run as a detached process. It run container in background and print container ID
-pis for port mapping. We are instructing the container to expose the container port externally. Container port
5432is mapped to host port
5432. That means the service can be accessed through
-vdirective is used to mount volumes. In our case we are mounting the container volume
/var/lib/postgresql/datato host path
~/apps/postgres. Containers are ephemeral devices that will contain its data for the time it is running. Once a container is stopped, its data is lost. Mounting volumes ensures that the data is added to a host path that can be reused when the container is restarted.
-eargument is for the environment variables. The supplied environment variables will be used to set up a Postgres user, password and a database.
To check that our container is running as expected, use the
docker ps command:
In my case the container is running as
my-postgres the name we gave it. We can login to the container using the
docker exec command while executing
/bin/bash interactively. Here we are also logging in to posgtres with the credentials we specified above and checking the version.
If you need to clean up the container when not in use, you can stop and remove the container using this command:
Using the docker-compose tool
We can achieve the same functionality with
docker-compose. Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a YAML file to configure your application’s services.
Docker Compose allows you to define the service (Postgres in our case) with properties like the
image to use,
ports to expose,
volumes to mount and
Here is how we would use
docker-compose to achieve the functionality above. Save this as
Now bring up the containers:
upbrings up the container
-din a detached mode
Verify the container processes using the ps command:
To login to the container and login to postgres, use this:
In this guide we managed to run Postgres 14 as a container in our system, we explored using the
docker run command while passing the required arguments an alternative approach of simplifying the process with