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what NOT to tar with what option to make a Linux system a docker image
How does one remove an image in Docker?Run a Docker Image as a ContainerWhere are Docker images stored on the host machine?Exploring Docker container's file systemWhat is the (best) way to manage permissions for Docker shared volumes?What is the difference between a Docker image and a container?How to copy Docker images from one host to another without using a repositoryHow to remove old and unused Docker imagesImport AMI image as Docker imagehow to create parent docker image with running host operating system?
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Basically, I want to clone my system, a well-working Gentoo, as a docker image. The use of the image/container would be software development and running some personal servers such as Subsonic, http(s), ssh, etc. The kernel is rarely involved in my development, which I can give up.
I learned that a tar image of a running system is almost sufficient to make a docker image easily. It seemed fairly straightforward.
The question is what directories must be excluded. Besides, what tar options I should use, say, to keep the permissions, owners, or special attributes as much as possible although the running kernel would be different.
I guess that I would remove /dev, /sys, /proc. Am I right? What else should I exclude? What is the best tar options for this? By "the best," I mean that I want to keep the file mode, owners, groups, and all hidden file attributes as much as possible.
docker tar
edited Mar 9 at 5:37
JJJ
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
add a comment |
Basically, I want to clone my system, a well-working Gentoo, as a docker image. The use of the image/container would be software development and running some personal servers such as Subsonic, http(s), ssh, etc. The kernel is rarely involved in my development, which I can give up.
I learned that a tar image of a running system is almost sufficient to make a docker image easily. It seemed fairly straightforward.
The question is what directories must be excluded. Besides, what tar options I should use, say, to keep the permissions, owners, or special attributes as much as possible although the running kernel would be different.
I guess that I would remove /dev, /sys, /proc. Am I right? What else should I exclude? What is the best tar options for this? By "the best," I mean that I want to keep the file mode, owners, groups, and all hidden file attributes as much as possible.
docker tar
edited Mar 9 at 5:37
JJJ
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
2
A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41
add a comment |
Basically, I want to clone my system, a well-working Gentoo, as a docker image. The use of the image/container would be software development and running some personal servers such as Subsonic, http(s), ssh, etc. The kernel is rarely involved in my development, which I can give up.
I learned that a tar image of a running system is almost sufficient to make a docker image easily. It seemed fairly straightforward.
The question is what directories must be excluded. Besides, what tar options I should use, say, to keep the permissions, owners, or special attributes as much as possible although the running kernel would be different.
I guess that I would remove /dev, /sys, /proc. Am I right? What else should I exclude? What is the best tar options for this? By "the best," I mean that I want to keep the file mode, owners, groups, and all hidden file attributes as much as possible.
docker tar
edited Mar 9 at 5:37
JJJ
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
Basically, I want to clone my system, a well-working Gentoo, as a docker image. The use of the image/container would be software development and running some personal servers such as Subsonic, http(s), ssh, etc. The kernel is rarely involved in my development, which I can give up.
I learned that a tar image of a running system is almost sufficient to make a docker image easily. It seemed fairly straightforward.
The question is what directories must be excluded. Besides, what tar options I should use, say, to keep the permissions, owners, or special attributes as much as possible although the running kernel would be different.
I guess that I would remove /dev, /sys, /proc. Am I right? What else should I exclude? What is the best tar options for this? By "the best," I mean that I want to keep the file mode, owners, groups, and all hidden file attributes as much as possible.
docker tar
docker tar
edited Mar 9 at 5:37
JJJ
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
edited Mar 9 at 5:37
JJJ
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
edited Mar 9 at 5:37
JJJ
29.3k147693
edited Mar 9 at 5:37
JJJ
29.3k147693
edited Mar 9 at 5:37
JJJ
29.3k147693
29.3k147693
asked Mar 9 at 2:54
StephenStephen
34029
asked Mar 9 at 2:54
StephenStephen
34029
asked Mar 9 at 2:54
StephenStephen
34029
34029
2
A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41
add a comment |
2
A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41
2
2
A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41
A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41
add a comment |
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A docker container is not a VM. It is meant to run a single service, not a whole system with multiple deamon processes. What you want to do is maybe better achieved with a VM snapshot.
– Henry
Mar 9 at 4:41