With the continuous development of Docker technology, more and more applications choose to run in Docker containers. However, for some complex applications, they may need to reference different packages with each other. In this case, package references need to be made between Docker containers.
There are two main ways to reference packages between Docker containers: using shared volumes and using Docker networks.
Using shared volumes
The method of using shared volumes is relatively simple, that is, first install the required package in a container, and then mount the package to another container. The specific steps are as follows:
- Install the required packages in the first container, for example:
docker run -it --name container1 ubuntu:latest apt-get update && apt-get install -y pkg1
- Then when running the second container, add the The installation package in one container is mounted to the second container, for example:
docker run -it --volumes-from container1 --name container2 ubuntu:latest
In this way, the second container can use the package installed in the first container.
Using Docker network
The method of using Docker network is relatively simple, that is, first create a Docker network, and then add containers that need to access each other to this network. The specific steps are as follows:
- Create a Docker network, for example:
docker network create mynetwork
- Add this network to the first container, for example:
docker run -it --name container1 --net mynetwork ubuntu:latest
- Join this network in the second container, for example:
docker run -it --name container2 --net mynetwork ubuntu:latest
In this way, the two containers can access each other.
In summary, by using shared volumes or Docker networks, packages can be easily referenced between two Docker containers. It should be noted that using a shared volume may cause problems due to incorrect copied content, while using a Docker network may cause problems due to network failure. It is recommended to choose the appropriate method based on the specific situation.
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