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Home Operation and Maintenance Docker How to configure domain name access for docker applications

How to configure domain name access for docker applications

Apr 15, 2025 am 06:51 AM
docker

Configuring an application to access a specific domain name in a Docker environment requires the following steps: Create a user-defined network and specify the network using the --network option. When running the container, use the --publish option to map the port of the application container to the host port. Add a DNS record in the host system's /etc/hosts file and resolve the custom domain name to the container's IP address. You can access the application using a custom domain name.

How to configure domain name access for docker applications

Docker application configuration domain name access

How to configure Docker applications to access specific domain names?

Accessing an application using a domain name in a Docker environment requires the following steps:

1. Create a custom network

Create a user-defined Docker network to which the application container will connect.

 <code class="sh">docker network create my-custom-network</code>

2. Map ports and domain names

When the container is running, use the --publish option to map the port of the application container to the host port. At the same time, use --network option to specify a custom network.

 <code class="sh">docker run -d --name my-app \ -p 8080:80 \ --network my-custom-network \ my-app-image</code>

3. Add DNS records

Add a DNS record to the /etc/hosts file of the host system and resolve the custom domain name to the IP address of the container.

 <code>127.0.0.1 my-app.local</code>

4. Access the application using a domain name

Now you can access the application using a custom domain name in your browser:

 <code>http://my-app.local:8080</code>

Other notes:

  • Make sure the container is listening on the same ports that are mapped to the host port.
  • If you are using Docker Compose, you can configure the domain name in the docker-compose.yml file.
  • For increased security, it is recommended to encrypt the connection using a TLS certificate.

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