cachePath permission denied when using Docker bind mounts #2165

Usage of cachePath in a Blocky docker deployment with bind mount results in:

cannot create temp cache file in /cache, serving without caching error=open /cache/dl-4060565016.tmp: permission denied

While it was not a problem until cachePath was introduced, it seems the underlying problem is that blocky is running as user 100.

There are several solutions to this problem, like (random order):

1. changing ownership of the cache path to user 100
2. adding user instruction to the docker run command -u "$(id -u):$(id -g)"
3. adding user instruction to the docker compose user: "${UID}:${GID}", or user: "1000:1000" # depending on the filesystem permissions
4. usage of named volumes

IMHO at least a note requiring filesystem permissions handling should be mentioned..