Hello. I'm trying to deploy RR via docker compose on Synology Container Manager, and I'm getting the following error in the container:

❯ ERROR: Status 1 while: BOOT=$(expr "$BOOT" : "^\ (.[^ ])\ *$") (line 315/15)

I have used the general rr.img file as well as built another one using the model DVA3221. Both have the same issue. I have tried on two different servers running Container Manager, and both have the same issue.

Any idea what could be going on? Here's the full logs I'm seeing in the container:

❯ Starting QEMU for Docker v7.29...
❯ For support visit https://github.com/qemus/qemu
❯ CPU: Intel Core i7 X 980 | RAM: 18/24 GB | DISK: 3 TB (btrfs) | KERNEL: 5.10.55+...
❯ ERROR: Status 1 while: expr "$BOOT" : "^\ (.[^ ])\ *$" (line 315/15)
❯ ERROR: Status 1 while: BOOT=$(expr "$BOOT" : "^\ (.[^ ])\ *$") (line 315/15)