How to jailbreak a macOS application from its container?

I have an application that generates a significant amount of non-persistent data during runtime, only for my use case, but not other users.

The software itself lacks a built-in mechanism to automatically delete this data, because other users do not have this need.

Therefore, I aim to create a RamDisk to manage this data. This approach would serve two purposes: minimizing wear and tear on my hard drive while simultaneously freeing up space automatically.

To achieve this, I removed the application's default data directory and replaced it with a symbolic link pointing to a directory on the RamDisk.

The application's data paths are located at (for example purposes only; not actual application names or paths):

~/Library/Containers/com.app.name/Data/Library/Application Support/AAA
~/Library/Containers/com.app.name/Data/Library/Application Support/BBB
~/Library/Containers/com.app.name/Data/Library/Application Support/CCC

I used the following command is a shell script:

echo “⚙️  Creating ${RAM_MB}MB RamDisk...”
DEVICE_ID=$(hdiutil attach -nomount “ram://$((RAM_MB * 2048))”)

echo “⚙️  RamDisk device id: $DEVICE_ID”
DISK_ID=$(echo $DEVICE_ID | awk ‘/^\/dev/{print $1; exit}’)

diskutil apfs create “$DISK_ID” RamDisk >/dev/null
echo “✅ RamDisk created at: $RAM_PATH”

To create the RamDisk

And by

ln -s /Volumes/RamDisk/AAA "~/Library/Containers/com.app.name/Data/Library/Application Support/AAA" 
ln -s /Volumes/RamDisk/BBB "~/Library/Containers/com.app.name/Data/Library/Application Support/BBB" 

to link the application's original data paths to the RamDisk.

The owner of this symbolic link is MyUsername:staff, and the directory within the RamDisk is the same.

However, I've noticed that the application seems unable to write content to the symbolic links.

I also tried changing the permissions of the root directory on the RamDisk to 777, but it didn't make any difference.

Here's my guess:

The application's data path contains "Containers" , so I suspect this is macOS's application sandboxing mechanism preventing the app from writing data outside the sandbox.

However, RamDisk itself isn't required by the application, so I can't use conventional methods to allow the app to write data to RamDisk.

Does anyone know how to resolve this issue? Or are there any other approaches that don't require a RamDisk?

I am using macOS 15.6.

Much appreciated.