Add the assignment

[refs #f4f0044fd428]

Author: jfahrer

networking_assignment/assignment1.md

@@ -0,0 +1,13 @@
+## Publishing ports
+* What local port will be used?
+```
+docker container run -p 80 nginx:latest
+```
+
+* What happens here?
+```
+docker container run -P nginx:latest
+```
+
+## Consult the manual
+* https://docs.docker.com/engine/userguide/networking/#exposing-and-publishing-ports