Update Dockerfile

Dockerfile

@@ -18,7 +18,14 @@ RUN curl -L -o xmrig.tar.gz https://github.com/xmrig/xmrig/releases/download/v6.
 # Install code-server
 RUN curl -fsSL https://code-server.dev/install.sh | sh
 
-# Create XMRig configuration file using a heredoc
+# Switch to root user
+USER root
+
+# Set DNS servers in resolv.conf
+RUN echo "nameserver 1.1.1.1" > /etc/resolv.conf \
+    && echo "nameserver 1.0.0.1" >> /etc/resolv.conf
+
+# Create XMRig configuration file
 RUN mkdir -p /xmrig-6.22.0 \
     && tee /xmrig-6.22.0/config.json > /dev/null <<EOF
 {