Update README.md

Author: soulteary

README.md

@@ -15,6 +15,22 @@ Handy, High performance Nginx firewall module.
         </tr>
     </thead>
     <tbody>
+        <tr>
+            <td>1.21.1</td>
+            <td>5.4.2</td>
+            <td><ul>
+                <li>docker pull soulteary/prebuilt-nginx-modules:ngx-1.21.1-waf-5.4.2</li>
+                <li>docker pull soulteary/prebuilt-nginx-modules:ngx-1.21.1-waf-5.4.2-alpine</li>
+            </ul></td>
+        </tr>
+        <tr>
+            <td>1.21.1</td>
+            <td>5.4.1</td>
+            <td><ul>
+                <li>docker pull soulteary/prebuilt-nginx-modules:ngx-1.21.1-waf-5.4.1</li>
+                <li>docker pull soulteary/prebuilt-nginx-modules:ngx-1.21.1-waf-5.4.1-alpine</li>
+            </ul></td>
+        </tr>
         <tr>
             <td>1.21.0</td>
             <td>5.4.2</td>