find-cache-dir
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Allow read-only `node_modules` folder with more sophisticated type check
I'm hardening the Docker image of my Node.js app by making the whole app owned by root but run it as another user so that it cannot modify itself. To make the cache work, only the node_modules/.cache/myapp
folder is owned by the app user.
Currently, with the changes introduced by #10, find-cache-dir
returns null
if node_modules
is not writable.
Here is how I think the permission check should work instead if node_modules
is found:
- If
node_modules/.cache/${name}
exists: If it is writeable, returnnode_modules/.cache/${name}
, otherwise returnnull
- Otherwise, if
node_modules/.cache
exists: If it is writeable, returnnode_modules/.cache/${name}
, otherwise returnnull
- Otherwise: If
node_modules
is writeable, returnnode_modules/.cache/${name}
, otherwise returnnull
As a workaround for now, I can specify the cache dir using the CACHE_DIR
environment variable.