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Does tagging a Docker image create a copy of the image?
The Next CEO of Stack Overflowinconsistent Docker imageDocker image creation using RPMDelivering docker image to multiple servers without docker machineExtract file from docker image?Running Docker in Docker: Access volumes from the parent DockerUnusual disk space usageEvery docker image I make cannot bind to any portDownloaded newer image - docker: Error response from daemon: OCI runtime create failed: container_linux.go:348:How to prevent docker Image from upgrading the yum packagedocker unable to run golang image
Does tagging a Docker image create a copy of the image?
It seems to me tagging by itself shouldn't.
But the following command seems to imply so.
Thanks.
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
$ docker tag friendlyhello gordon/get-started:part2
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
docker
edited 2 days ago
Stephen Kitt
179k24406485
asked 2 days ago
TimTim
28.4k78269490
add a comment |
Does tagging a Docker image create a copy of the image?
It seems to me tagging by itself shouldn't.
But the following command seems to imply so.
Thanks.
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
$ docker tag friendlyhello gordon/get-started:part2
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
docker
edited 2 days ago
Stephen Kitt
179k24406485
asked 2 days ago
TimTim
28.4k78269490
add a comment |
Does tagging a Docker image create a copy of the image?
It seems to me tagging by itself shouldn't.
But the following command seems to imply so.
Thanks.
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
$ docker tag friendlyhello gordon/get-started:part2
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
docker
edited 2 days ago
Stephen Kitt
179k24406485
asked 2 days ago
TimTim
28.4k78269490
Does tagging a Docker image create a copy of the image?
It seems to me tagging by itself shouldn't.
But the following command seems to imply so.
Thanks.
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
$ docker tag friendlyhello gordon/get-started:part2
$ docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
python 2.7-slim 1c7128a655f6 5 days ago 183MB
docker
docker
edited 2 days ago
Stephen Kitt
179k24406485
asked 2 days ago
TimTim
28.4k78269490
edited 2 days ago
Stephen Kitt
179k24406485
asked 2 days ago
TimTim
28.4k78269490
edited 2 days ago
Stephen Kitt
179k24406485
edited 2 days ago
Stephen Kitt
179k24406485
edited 2 days ago
Stephen Kitt
179k24406485
179k24406485
asked 2 days ago
TimTim
28.4k78269490
asked 2 days ago
TimTim
28.4k78269490
asked 2 days ago
TimTim
28.4k78269490
28.4k78269490
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
No, a copy is not made.
You can tell this because the Image ID value is identical:
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
This means they reference the same data. If you then do a docker rmi friendlyhello then it won't delete anything, just remove the tag.
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
No, a copy is not made.
You can tell this because the Image ID value is identical:
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
This means they reference the same data. If you then do a docker rmi friendlyhello then it won't delete anything, just remove the tag.
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
add a comment |
No, a copy is not made.
You can tell this because the Image ID value is identical:
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
This means they reference the same data. If you then do a docker rmi friendlyhello then it won't delete anything, just remove the tag.
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
add a comment |
No, a copy is not made.
You can tell this because the Image ID value is identical:
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
This means they reference the same data. If you then do a docker rmi friendlyhello then it won't delete anything, just remove the tag.
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
No, a copy is not made.
You can tell this because the Image ID value is identical:
friendlyhello latest d9e555c53008 3 minutes ago 195MB
gordon/get-started part2 d9e555c53008 3 minutes ago 195MB
This means they reference the same data. If you then do a docker rmi friendlyhello then it won't delete anything, just remove the tag.
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
answered 2 days ago
Stephen HarrisStephen Harris
27.2k35283
27.2k35283
add a comment |
add a comment |
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