update docusaurus to v2.0.0-beta.5

Signed-off-by: jffarge <jf@dagger.io>

website/src/theme/DocPage/styles.module.css

@@ -20,6 +20,10 @@
   width: 100%;
 }
 
+.docSidebarContainer {
+  display: none;
+}
+
 @media (min-width: 997px) {
   .docMainContainer {
     flex-grow: 1;
@@ -31,6 +35,7 @@
   }
 
   .docSidebarContainer {
+    display: block;
     width: var(--doc-sidebar-width);
     margin-top: calc(-1 * var(--ifm-navbar-height));
     border-right: 1px solid var(--ifm-toc-border-color);
@@ -78,9 +83,3 @@
     ) !important;
   }
 }
-
-@media (max-width: 996px) {
-  .docSidebarContainer {
-    display: none;
-  }
-}