50
votes
3
answers
383
views
What is the runtime performance cost of a Docker container?
I'd like to comprehensively understand the run-time performance cost of a Docker container. I've fou
55
votes
6
answers
1.4K
views
What is the difference between "expose" and "publish" in Docker?
I'm experimenting with Dockerfiles, and I think I understand most of the logic. However, I don't see
56
votes
18
answers
1.3K
views
How do I edit a file after I shell to a Docker container?
I successfully shelled to a Docker container using: docker exec -i -t 69f1711a205e bash Now I need to edit
59
votes
16
answers
1.1K
views
How to include files outside of Docker's build context?
How can I include files from outside of Docker's build context using the "ADD" command in the Docker file
52
votes
11
answers
1.2K
views
Run a Docker image as a container
After building a Docker image from a dockerfile, I see the image was built successfully, but what do I do with
52
votes
5
answers
2.5K
views
What is the difference between docker-compose ports vs expose
What is the difference between ports and expose options in docker-compose.yml
55
votes
16
answers
2.6K
views
Using Docker-Compose, how to execute multiple commands
I want to do something like this where I can run multiple commands in order. db: image: postgres web: buil
60
votes
11
answers
1.8K
views
Docker how to change repository name or rename image?
I'm trying to change repository name of the image: REPOSITORY TAG IMAGE ID
51
votes
26
answers
2.6K
views
How to mount a host directory in a Docker container
I am trying to mount a host directory into a Docker container so that any updates done on the host is reflecte
60
votes
19
answers
787
views
How does one remove a Docker image?
I'm running Docker under Vagrant under OS X 10.8.4 (Mountain Lion), and whenever I try to delete a saved
47
votes
27
answers
2.3K
views
How to remove old and unused Docker images
When running Docker for a long time, there are a lot of images in system. How can I remove all unused Docker i
55
votes
29
answers
2.4K
views
Where are Docker images stored on the host machine?
I managed to find the containers under directory /var/lib/docker/containers, but I can't find the images.
53
votes
14
answers
2.9K
views
56
votes
14
answers
1.3K
views
How do I pass environment variables to Docker containers?
I'm new to Docker, and it's unclear how to access an external database from a container. Is the best
60
votes
15
answers
1.7K
views
How to deal with persistent storage (e.g. databases) in Docker
How do people deal with persistent storage for your Docker containers? I am currently using this approach: bu
65
votes
28
answers
1.9K
views
What is the difference between a Docker image and a container?
When using Docker, we start with a base image. We boot it up, create changes and those changes are saved in la
54
votes
9
answers
2.1K
views
How to force Docker for a clean build of an image
I have build a Docker image from a Docker file using the below command. $ docker build -t u12_core -f u12_cor
66
votes
30
answers
1.9K
views
How to remove old Docker containers
This question is related to Should I be concerned about excess, non-running, Docker containers?. I'm won
54
votes
26
answers
1.2K
views
How do I get into a Docker container's shell?
I'm getting started working with Docker. I'm using the WordPress base image and docker-compose. I&a
66
votes
30
answers
924
views
How to get a Docker container's IP address from the host
Is there a command I can run to get the container's IP address right from the host after a new container