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Feature Request: Let docker cp respect .dockerignore files #40925
Description
Description
I have a use-case, where I want to create (but not start) a container on a remote docker host, then use docker cp to copy files over the network into the container and then start the container. Basically a Dockerfile with FROM, COPY and a RUN, but that does not actually produce a container.
While a COPY instruction in a Dockerfile respects .dockerignore files, the docker cp command does not support this, resulting in copying a lot of unnecessary files.
Describe the results you received:
Files that are matched by .dockerignore files are still being copied.
Describe the results you expected:
Files that are matched by .dockerignore files are not copied.
Additional information you deem important (e.g. issue happens only occasionally):
For backwards compatibility this should probably require a flag like --use-ignore or so.
Output of docker version:
Client:
Version: 19.03.8-ce
API version: 1.40
Go version: go1.14.1
Git commit: afacb8b7f0
Built: Thu Apr 2 00:04:36 2020
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.8
API version: 1.40 (minimum version 1.12)
Go version: go1.12.17
Git commit: afacb8b7f0
Built: Wed Mar 11 01:24:28 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683
Activity
margori commentedon May 18, 2020
I confirm. I have same expectation
docker cpshould respect.dockerignorefileMadhur1997 commentedon Jun 21, 2020
I would like to work on this
itscaro commentedon Sep 29, 2020
I have the same use-case. Building a new image to use COPY is less fit for my use-case.
andregeert commentedon Oct 27, 2020
My use case is in devops testing code inside a container. The environment takes a long time to build, I would like to copy the code directory at runtime, ignoring files in the
.dockerignorelist.kddsultan commentedon Mar 7, 2024
Does anyone know this is still the case?