Add DocAuth license key

Dockerfile

@@ -65,8 +65,10 @@ COPY --from=pspdfkit/ai-assistant:nightly /base $HOME/app/aia
 COPY --chown=node:node service-config.yml /service-config.yml
 RUN chown -R user:user $HOME/app/aia
 
-# Copy nginx configuration
+# Copy nginx configuration and replace license key
 COPY nginx.conf /etc/nginx/nginx.conf
+RUN --mount=type=secret,id=DOCAUTH_LICENSE_KEY,mode=0444,required=true \
+    sed -i "s/\$DOCAUTH_LICENSE_KEY/$(cat /run/secrets/DOCAUTH_LICENSE_KEY)/g" /etc/nginx/nginx.conf
 
 # Copy web files
 COPY --chown=user:user index.html $HOME/app/docauth/

document-authoring.js

@@ -68,7 +68,14 @@ script.crossOrigin = true;
 document.head.appendChild(script);
 
 script.onload = async () => {
-  const docAuthSystem = await DocAuth.createDocAuthSystem({});
+  // Fetch license key from nginx endpoint.
+  const licenseKeyResponse = await fetch('/api/license-key');
+  if (!licenseKeyResponse.ok) {
+    throw new Error('Failed to fetch license key');
+  }
+  const { licenseKey } = await licenseKeyResponse.json();
+  
+  const docAuthSystem = await DocAuth.createDocAuthSystem({licenseKey});
   
   const editor = await docAuthSystem.createEditor(
     document.getElementById("editor"),

nginx.conf

@@ -26,5 +26,10 @@ http {
         location /v1 {
             proxy_pass http://127.0.0.1:8082;
         }
+
+        location /api/license-key {
+            default_type application/json;
+            return 200 '{"licenseKey": "$DOCAUTH_LICENSE_KEY"}';
+        }
     }
 }