docs: automate generated docs commits and add docs site structure

docs/diagrams/docker-compose.dot

@@ -0,0 +1,4 @@
+digraph Compose {
+  rankdir=LR;
+  node [fontname=Helvetica];
+}

docs/diagrams/docker-compose.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="640" height="80"><text x="10" y="40">Graphviz dot not found in environment.</text></svg>