compose: fix server command structure (critical bug)

Compose shlex-splits 'command: |' block scalar into a list when used with
'entrypoint: ["/bin/sh","-c"]'. Docker then runs '/bin/sh -c exec' where
'exec' is the only -c argument and '/app/llama-server' becomes $0. 'exec'
with no program in sh exits 0 immediately → 37-restart crash-loop, no server.

Fix: use 'entrypoint: []' and 'command: [/bin/sh, -c, <|block>]' so the full
shell command is passed as a single list element — not further split by Compose.

compose.yaml

@@ -67,8 +67,15 @@ x-server: &server
       soft: -1
       hard: -1
   restart: unless-stopped
-  entrypoint: ["/bin/sh", "-c"]
+  # NOTE: command must be a list with the shell as explicit elements — do NOT use
-  command: |
+  # `entrypoint: ["/bin/sh","-c"]` + `command: |` block scalar, because Compose
+  # shlex-splits the block scalar into a list and Docker then passes only "exec"
+  # as the -c argument (the rest become $0, $1 … → instant exit 0).
+  entrypoint: []
+  command:
+    - /bin/sh
+    - -c
+    - |
       exec /app/llama-server \
         --model "/models/$$MODEL_FILE" \
         --host 0.0.0.0 --port 8080 \