For all platforms Docker v 20.10 and above (since December 14th 2020) On Linux, add –add-host=host.docker.internal:host-gateway to your Docker command to enable this feature. (See below for Docker Compose configuration.) Use your internal IP address or connect to the special DNS name host.docker.internal which will resolve to the internal IP address used by the host. … Read more
I got confused by this also. There are two commands relevant here: docker run # Run a command in a **new** container docker start # Start one or more stopped containers
After evaluating the answers and studying the topic I’d like to summarize. The Docker way to upgrade containers seems to be the following: Application containers should not store application data. This way you can replace app container with its newer version at any time by executing something like this: docker pull mysql docker stop my-mysql-container … Read more
The current best practice is: docker system prune Note the output from this command prior to accepting the consequences: WARNING! This will remove: – all stopped containers – all networks not used by at least one container – all dangling images – all dangling build cache Are you sure you want to continue? [y/N] In … Read more
You can use Environment Replacement in your Dockerfile as follows: ENV PATH=”${PATH}:/opt/gtk/bin”
With docker 1.3, there is a new command docker exec. This allows you to enter a running container: docker exec -it [container-id] bash Note: this assumes bash is installed on your container. You may run sh or whatever interactive shell is installed on the container.
To expose just one port, this is what you need to do: docker run -p <host_port>:<container_port> To expose multiple ports, simply provide multiple -p arguments: docker run -p <host_port1>:<container_port1> -p <host_port2>:<container_port2>
You can run an interactive shell container using that image and explore whatever content that image has. For instance: docker run -it image_name sh Or following for images with an entrypoint docker run -it –entrypoint sh image_name Or if you want to see how the image was build, meaning the steps in its Dockerfile, you … Read more
I’m also interested in this problem. As @Thasmo mentioned, port forwardings can be specified ONLY with docker run (and docker create) command. Other commands, docker start does not have -p option and docker port only displays current forwardings. To add port forwardings, I always follow these steps, stop running container docker stop test01 commit the … Read more
Basically, you have three options: Neither specify EXPOSE nor -p Only specify EXPOSE Specify EXPOSE and -p 1) If you specify neither EXPOSE nor -p, the service in the container will only be accessible from inside the container itself. 2) If you EXPOSE a port, the service in the container is not accessible from outside … Read more