fix: updating server config

Author: José Ángel Galindo Duarte

docker-entrypoint-collab.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+# Entrypoint for the collab (:develop) image. Runs two processes in one
+# container: the Y.js collab server (loopback only, fronted by nginx) and nginx
+# serving the SPA. If either exits, the container exits so the orchestrator
+# (Watchtower) can restart it cleanly. Written for busybox ash (no `wait -n`).
+set -e
+
+# Collab server, bound to loopback — only reachable through the nginx /collab
+# reverse proxy, never published directly.
+COLLAB_HOST=127.0.0.1 COLLAB_PORT=1234 node /collab/server/collab-server.js &
+collab_pid=$!
+
+# nginx in the foreground process group.
+nginx -g 'daemon off;' &
+nginx_pid=$!
+
+# Forward termination signals to both children.
+trap 'kill "$collab_pid" "$nginx_pid" 2>/dev/null' TERM INT
+
+# Poll: as soon as either process is gone, stop the container (non-zero exit so
+# the orchestrator restarts it).
+while kill -0 "$collab_pid" 2>/dev/null && kill -0 "$nginx_pid" 2>/dev/null; do
+  sleep 5
+done
+
+kill "$collab_pid" "$nginx_pid" 2>/dev/null || true
+exit 1

nginx.collab.conf

@@ -0,0 +1,74 @@
+# /etc/nginx/nginx.conf  (collab / develop image)
+#
+# Superset of nginx.conf: in addition to serving the static SPA it reverse-
+# proxies the bundled Y.js collab backend (node, listening on 127.0.0.1:1234)
+# so collaboration rides the same origin/port as the app. The frontend is built
+# with VITE_COLLAB_URL=<scheme>://<host>/collab, so:
+#   - WebSocket sessions hit  /collab/<docId>  -> node  /<docId>
+#   - the pre-flight health check hits  /health  -> node /health
+# The collab server is never exposed directly; only port 80 is published.
+
+# njs dynamic module — bundled with the official nginx:alpine image.
+# Required for the /raw endpoint that serves decoded UVL content to UVLHub.
+load_module modules/ngx_http_js_module.so;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    sendfile        on;
+    keepalive_timeout  65;
+
+    js_path "/etc/nginx/njs/";
+    js_import raw from raw.js;
+
+    # Bundled collab (Y.js websocket) server.
+    upstream collab_backend {
+        server 127.0.0.1:1234;
+    }
+
+    server {
+        listen 80;
+        server_name localhost;
+
+        root /usr/share/nginx/html;
+        index index.html;
+
+        # Decodes a base64 UVL model from ?model= and returns it as plain text
+        # so that UVLHub can fetch the raw UVL content server-side.
+        location /raw {
+            js_content raw.handler;
+        }
+
+        # Collab WebSocket sessions. Trailing slash strips the /collab/ prefix
+        # so the doc id reaches the Y.js server as its room name (/<docId>).
+        location /collab/ {
+            proxy_pass http://collab_backend/;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_read_timeout 3600s;
+            proxy_send_timeout 3600s;
+        }
+
+        # Health probe the frontend pings before opening a session.
+        location = /health {
+            proxy_pass http://collab_backend/health;
+            proxy_set_header Host $host;
+        }
+
+        location / {
+            try_files $uri /index.html;
+        }
+
+        gzip on;
+        gzip_types text/css application/javascript application/json image/svg+xml;
+        gzip_min_length 1000;
+    }
+}

server/package.json

@@ -0,0 +1,16 @@
+{
+  "name": "flamapy-ide-collab-server",
+  "private": true,
+  "version": "1.0.0",
+  "description": "Standalone runtime deps for the Y.js collaboration server bundled into the develop Docker image. Versions mirror the root package.json.",
+  "type": "module",
+  "main": "collab-server.js",
+  "scripts": {
+    "start": "node collab-server.js"
+  },
+  "dependencies": {
+    "ws": "^8.18.0",
+    "y-websocket": "^1.5.4",
+    "yjs": "^13.6.18"
+  }
+}