bind mount (volumes) not allowed for files – only directorys

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Accepted Answer

Docker does not support bind mounting individual files in certain storage drivers (like btrfs). This limitation arises because the underlying filesystem expects a directory structure for mounts. When attempting to mount a single file, Docker encounters an error as it tries to treat the file as a directory. Instead of mounting the single file, create a directory that will hold the configuration file. This allows Docker to mount the entire directory instead of a single file. Copy the existing configuration file into the newly created directory. This ensures that the file is accessible within the mounted directory structure. Modify the Docker Compose file to bind mount the directory instead of the file. This allows Docker to correctly mount the directory containing the configuration file. After making the changes, restart the Docker container to apply the new volume configuration. This will ensure that the container uses the updated directory mount.

bind mount (volumes) not allowed for files – only directorys

Problem

Error Output

1 Fix

Use a Directory for Bind Mount Instead of a File

Create a Directory for Configuration Files

Copy the Configuration File into the New Directory

Update Docker Compose Configuration

Restart the Docker Container

Validation

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