Update for 09-05-22 19:15

tech/Docker.wiki

@@ -16,6 +16,21 @@ the `docker` command is all thats needed to run a container.
 Docker-compose allows you to automate setting up several containers into a
 single command. 
 
+=== ports ===
+
+* expose a port in the container to the world
+* below binds port 8080 of the container to reply to any IP on the host at port
+  80
+
+{{{
+ports:
+  - 0.0.0.0:80:8080/tcp
+  }}}
+
+=== volumes ===
+
+* mount a folder on the filesystem inside the container
+
 == Useful commands ==
 
 === Get a shell on a container ===