You should start by removing any older version of docker that may be installed so that you can use the latest for the following example. In this example, I will use a CentOS 7 installation to demonstrate how to connect docker to localhost. Then, when sending requests to 127.0.0.1 your request will be sent the host machines localhost. In order to reach the hosts localhost you need to use –network=”host” in your docker run command. But if you’re using a Linux system the approach is a little different. The above approach is the current way to connect docker to localhost for Docker Desktop For Windows and Docker Desktop for Mac users. (1 row) What about non-Windows/MacOS Docker users? You are now connected to database "bernieslearnings" as user "postgres". docker run -it ubuntu:latestĪpt-get update & apt-get install -y psql -user postgres -host We’ll start by running an Ubuntu docker image in interactive mode and installing the postgres command line tools. I have a table Users in database bernieslearnings and I’ll run a container that can retrieve the data in the table. For the PostgreSQL installation, I have installed the default settings and haven’t edited any configuration files to perform the following tasks. I’ll use a PostgreSQL installation local on my Mac to demonstrate. A practical use case to connect docker to localhostĪ typical example of using a connection to localhost is connecting to a database you have installed locally. For Linux users, just use docker run with –network=”host” and use 127.0.0.1 to point to your localhost.
So only use this in your development environment.
This will not work in a production environment outside of Docker Desktop. Within your container, all you need to do to access the localhost is point your request to : To connect Docker to localhost, running Docker for Windows or Docker for Mac, you can use the special DNS name which resolves to the internal IP address used by the host.
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