fix: config.json lives in /app/data/ volume, not baked into image

- entrypoint copies example config to /app/data/config.json on first run
- symlinks /app/config.json → /app/data/config.json so app code unchanged
- theme.json also symlinked from /app/data/ if present
- config persists across container rebuilds without extra bind mounts
- updated README with new config/theme instructions

README.md

@@ -120,11 +120,26 @@ docker run -d \
   -p 3000:3000 \
   -p 1883:1883 \
   -v meshcore-data:/app/data \
-  -v $(pwd)/config.json:/app/config.json \
   meshcore-analyzer
 ```
 
-**Persist your database** across container rebuilds by using a named volume (`meshcore-data`) or bind mount (`-v ./data:/app/data`).
+Config lives in the data volume at `/app/data/config.json` — a default is created on first run. To edit it:
+```bash
+docker exec -it meshcore-analyzer vi /app/data/config.json
+```
+
+Or use a bind mount for the data directory:
+```bash
+docker run -d \
+  --name meshcore-analyzer \
+  -p 3000:3000 \
+  -p 1883:1883 \
+  -v ./data:/app/data \
+  meshcore-analyzer
+# Now edit ./data/config.json directly on the host
+```
+
+**Theme customization:** Drop a `theme.json` in the same data directory (`/app/data/theme.json`) to override default colors, branding, and node/packet type colors for all users. Use the built-in customizer (Tools → Customize) to design your theme and download the file.
 
 ### Manual Install
 

docker/entrypoint.sh

@@ -1,9 +1,17 @@
 #!/bin/sh
 
-# Copy example config if no config.json exists
-if [ ! -f /app/config.json ]; then
-  echo "[entrypoint] No config.json found, copying from config.example.json"
-  cp /app/config.example.json /app/config.json
+# Copy example config if no config.json exists (check volume mount first)
+if [ ! -f /app/data/config.json ]; then
+  echo "[entrypoint] No config.json found in /app/data/, copying example"
+  cp /app/config.example.json /app/data/config.json
+fi
+
+# Symlink so the app finds it at /app/config.json
+ln -sf /app/data/config.json /app/config.json
+
+# Same for theme.json (optional)
+if [ -f /app/data/theme.json ]; then
+  ln -sf /app/data/theme.json /app/theme.json
 fi
 
 exec /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf