Update Dockerfile

Dockerfile

@@ -16,7 +16,7 @@ RUN apt-get update && apt-get install -y sudo && \
 # Install core tools
 RUN apt-get install -y curl gnupg apt-transport-https ca-certificates && apt-get clean
 
-# Add Node.js 20.x
+# Add Node.js 20.x and install essential packages
 RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
     apt-get install -y --no-install-recommends \
     nodejs \
@@ -52,7 +52,6 @@ RUN pip3 install --no-cache-dir \
     schedule
 
 # ---- Tailscale Setup ----
-# Import Tailscale repo GPG key and list
 RUN curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/jammy.noarmor.gpg | \
     tee /usr/share/keyrings/tailscale-archive-keyring.gpg > /dev/null && \
     echo "deb [signed-by=/usr/share/keyrings/tailscale-archive-keyring.gpg] https://pkgs.tailscale.com/stable/ubuntu jammy main" \
@@ -61,18 +60,21 @@ RUN curl -fsSL https://pkgs.tailscale.com/stable/ubuntu/jammy.noarmor.gpg | \
     apt-get install -y tailscale && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
-# Create /app directory and give access to Draco
+# Prepare /app directory owned by Draco
 RUN mkdir -p /app && echo "Tailscale & app running..." > /app/index.html && \
     chown -R Draco:Draco /app
 
 WORKDIR /app
 
-# Switch to Draco
 USER Draco
 
-# Start Tailscale in userspace mode and authenticate
-# Also start a simple Python HTTP server in background
+# Start tailscaled with userspace networking, wait for socket, then up tailscale & start HTTP server
 CMD tailscaled --tun=userspace-networking --socks5-server=localhost:1055 > /dev/null 2>&1 & \
-    sleep 2 && \
+    for i in $(seq 1 10); do \
+      if [ -S /tmp/tailscaled.sock ]; then \
+        echo "tailscaled is ready"; break; \
+      fi; \
+      sleep 1; \
+    done; \
     tailscale up --authkey=tskey-auth-krBh6cJ4GS11CNTRL-Ys653FbsA8VzjZbm7CdD8Vy4C1iCpmh2 --ssh --netfilter-mode=off && \
     python3 -m http.server 7860