GitHub
github.com › moby › buildkit › issues › 1942
Not possible to mount paths that are excluded by dockerignore · Issue #1942 · moby/buildkit
January 13, 2021 - the .dockerignore to exclude the files when using COPY / ADD, but RUN --mount to have access to files in the build-context.
Author thaJeztah
Docker Community
forums.docker.com › general
Dockerfile: COPY failed: file not found in build context or excluded by .dockerignore: - General - Docker Community Forums
January 24, 2022 - When put instruction inside the Dockerfile: COPY test_copy.txt . and after that start build image I get the result : COPY failed: file not found in build context or excluded by .dockerignore: stat test_copy.txt: file does not exist File test_copy.txt is stored in the same dir as Dockerfile.
Docker build sometimes fail on “file not found or excluded by .dockerignore” for a nested ignored file
.dockerignore includes the line **/node_modules and my build context is the root directory due to usage of commons. ... error checking context: 'file ('/workspace/src/frontend/node_modules/.staging/wrap-ansi-2a6f888f') not found or excluded by .dockerignore'. More on github.com
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February 2, 2020Docker: COPY failed: file not found in build context or excluded by .dockerignore
I have a docker compose file which sets up a service with a GitHub URL for the context. The service’s Dockerfile copies a requirements.txt and installs it. That works OK (COPY requirements.txt /rasa_traind/). But when I change that line to COPY . I get a COPY failed: file not found in build ... More on forums.docker.com
0
0
October 1, 2021docker - Dockerignore: Ignore everything except a file and the Dockerfile - Stack Overflow
So the main intention was to dockerize a fat jar application and put it into Elasticbeanstalk. The problem is with the context. It's a little bit stupid to add so much context into docker if all I ... More on stackoverflow.com
.dockerignore being ... ignored?
I’m having trouble excluding files for deployment with a .dockerignore. I’ve validated that files are excluded if I locally build a docker using this Stackoverflow answer. But when I run flyctl deploy --remote-only , the excluded files and directories still end up on the app server. More on community.fly.io
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March 11, 2022OneUptime
oneuptime.com › home › blog › how to use docker ignore files
How to Use Docker Ignore Files
January 25, 2026 - The .dockerignore file tells Docker which files and directories to exclude when building images.
GitHub
github.com › docker › cli › issues › 2305
Docker build sometimes fail on “file not found or excluded by .dockerignore” for a nested ignored file · Issue #2305 · docker/cli
February 2, 2020 - .dockerignore includes the line **/node_modules and my build context is the root directory due to usage of commons. ... error checking context: 'file ('/workspace/src/frontend/node_modules/.staging/wrap-ansi-2a6f888f') not found or excluded by .dockerignore'.
Author liiri
Docker
docs.docker.com › manuals › docker build › build context
Build context | Docker Docs
You can use a .dockerignore file to exclude files or directories from the build context.
Codefresh
codefresh.io › home › blog › do not ignore .dockerignore (it’s expensive and potentially dangerous)
Do not ignore .dockerignore (it's expensive and potentially dangerous) | Codefresh
March 13, 2025 - Now that you know why you need to control the docker build context, we can see how this is done. The .dockerignore file is similar to gitignore file, used by the git tool. similarly to .gitignore file, it allows you to specify a pattern for files and folders that should be ignored by the Docker client when generating a build context.
Docker Docs
docs.docker.com › reference › build checks › copyignoredfile
CopyIgnoredFile | Docker Docs
Files which match the patterns in a .dockerignore file are not present in the context of the image when it is built.
Medium
medium.com › @maheshgaikwad128 › exclude-files-and-folders-from-docker-build-using-dockerignore-965550f01aae
Exclude Files and Folders from Docker Build Using .dockerignore | by Maheshgaikwad | Medium
February 24, 2025 - It specifies patterns to exclude files and directories from being sent to the Docker daemon during the build process. By reducing the build context size, .dockerignore improves both security and performance.
Markbirbeck
markbirbeck.com › 2018 › 12 › 07 › getting-control-of-your-dockerignore-files
Getting Control Of Your .dockerignore Files | Mark Birbeck’s Blog
December 7, 2018 - The .dockerignore file is an ‘ignore file’ which tells the build process which files to leave out when transferring the context to the Docker daemon. For this situation it could be as simple as this: ... Don’t worry that this could prevent the whole build process from working.
Docker Community
forums.docker.com › general
Docker: COPY failed: file not found in build context or excluded by .dockerignore - General - Docker Community Forums
October 1, 2021 - I have a docker compose file which sets up a service with a GitHub URL for the context. The service’s Dockerfile copies a requirements.txt and installs it. That works OK (COPY requirements.txt /rasa_traind/). But when I change that line to COPY . I get a COPY failed: file not found in build ...
Top answer 1 of 3
296
If you need to ignore everything except some directories or files and also ignore some unnecessary files inside those allowed directories you can use the following .dockerignore file:
# Ignore everything
*
# Allow files and directories
!/file.txt
!/src
# Ignore unnecessary files inside allowed directories
# This should go after the allowed directories
**/*~
**/*.log
**/.DS_Store
**/Thumbs.db
2 of 3
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From the dockerfile reference:
Beyond Go’s filepath.Match rules, Docker also supports a special wildcard string ** that matches any number of directories (including zero). For example, **/*.go will exclude all files that end with .go that are found in all directories, including the root of the build context.
So a line containing simply ** will ignore everything in the same directory as the Dockerfile.
As expected the exclamation can then be used to reference any files you do wish to send to the docker daemon.
Top answer 1 of 15
3
.dockerignore also does not work for me. When I deploy with
fly deploy --ignorefile=other/.dockerignore --dockerfile other/Dockerfile
The build context is close to the same size of my entire directory:
=> [internal] load build context 268.9s
=> => transferring cont…
2 of 15
1
I have seen various people report issues when using an M1 Mac, all related to Docker. Hmm.
One thing you could maybe try is what I do in my .dockerignore file. Which is to exclude everything and then only add back things you know you need deploying. Doing that automatically skips the git folder, an…
CloudBees
cloudbees.com › blog › leveraging-the-dockerignore-file-to-create-smaller-images
Leveraging the dockerignore File to Create Smaller Images
Since the .dockerignore file uses Unix style glob patterns, we can safely add .* and only dot-files will be excluded.
Medium
medium.com › @bounouh.fedi › mastering-the-dockerignore-file-boosting-docker-build-efficiency-398719f4a0e1
Mastering the .dockerignore File: Boosting Docker Build Efficiency | by Fedi Bounouh | Medium
November 9, 2024 - One trick that is often overlooked but can make a big impact is using a .dockerignore file. If you’re familiar with .gitignore, you’ll find this concept familiar: it’s a file that helps exclude unnecessary files and directories from being included in the Docker build context, saving time, space, and headaches.
JetBrains
youtrack.jetbrains.com › issue › IDEA-203390
Dockerfile is excluded by pattern '*' in .dockerignore file
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GeeksforGeeks
geeksforgeeks.org › how-to-use-a-dockerignore-file
How to Use a .dockerignore File? - GeeksforGeeks
April 8, 2024 - Now, similar to a .gitignore file that is commonly used when you build Git repositories, a .dockerignore file is used to ignore files and folders when you try to build a Docker Image.
Docker Community
forums.docker.com › docker desktop
Docker build for Windows containers: "COPY failed: file not found in build context or excluded by .dockerignore" - Docker Desktop - Docker Community Forums
April 29, 2024 - I want to create a Windows Docker container. So, I created a local directory, added all the necessary context files in there and added a Dockerfile to it. The Dockerfile (in its current state) just defines some variables and a COPY instruction: # escape=` FROM mcr.microsoft.com/windows/ser...
Kevinpollet
kevinpollet.dev › posts › how-to-use-your-dockerignore-as-a-whitelist
How to use your .dockerignore as a whitelist - kevinpollet.dev
August 10, 2019 - As an example, the following .dockerignore instructs the Docker CLI to exclude everything excepted the JS files within the lib folder from the build context: # Ignore everything * # Allow files and folders with a pattern starting with ! !lib/**/*.js · With a whitelist it’s also possible ...
GitHub
github.com › docker › cli › issues › 2847
.dockerignore does not recursively include with negated exclusion · Issue #2847 · docker/cli
November 19, 2020 - Description The following .dockerignore file includes only .py files on the top-level, but not in sub-directories. * !**/*.py !requirements.txt Dockerfile includes: COPY . . Steps to reproduce the issue: Build image Run image and list fi...
Author snthibaud