.
├── A
└── B
├── .dockerignore
├── Dockerfile
└── run_script.sh
My folder structure looks similar to the above tree. I have a Dockerfile, and a .dockerignore file. I use the run-script to build my docker image. In the build, i send the entire context from the root. So, effectively, the context contains both the folders A, and B.
The run script contains the following command:
docker build docker build -f Dockerfile ..
In the .dockerignore file, I would like to ignore certain files which are inside the folder A.
In the dockerignore documents, I can use */ or **/ basically to ignore subdirectories, but using them here does not seem to be effective in ignoring the files (As they are located in the parent/root directory)
These below commands do not help
**/A
*/A
I tried having the .dockerignore file in the root (i.e root contains the folders A, B and .dockerignore -This works). The ignore file contains:
A/
B/
So my question is if there is a solution of ignoring files and folders which are present in the build context, but are technically a level above the stored .dockerignore?
>Solution :
The .dockerignore file has to be placed in the context directory (in your case the folder that contains both A and B).
This is specified in the docs:
To increase the build’s performance, exclude files and directories by adding a .dockerignore file to the context directory.
Also here
Before the docker CLI sends the context to the docker daemon, it looks for a file named .dockerignore in the root directory of the context.