slight updates

Dockerfile

@@ -11,7 +11,7 @@ RUN rm -rf nginx
 
 RUN npm run build -- --base-href=/
 
-FROM nginx:1.23.4-alpine
+FROM nginx:mainline-alpine
 
 RUN apk update && apk add --upgrade apk-tools && apk upgrade --available
 

src/app/pages/doc/content/customize/cust-network/cust-network.component.html

 <p>
   The network is based on
   <a href="https://visjs.github.io/vis-network/" target="_blank"
-    >Vis.js version 9.1.2</a
+    >Vis.js version 9.1.6</a
   >. Therefore, Drugst.One supports all options available for Vis.js networks as
   describes on the
   <a href="https://visjs.github.io/vis-network/docs/network/" target="_blank"

src/app/pages/doc/content/implementation/impl-vis/impl-vis.component.html

@@ -3,7 +3,7 @@
   <a href="https://visjs.github.io/vis-network/docs/network/" target="_blank"
     >vis.js network library</a
   >
-  version 9.1.2.
+  version 9.1.6.
 </p>