Removed 4002/udp for now, fixed start commands

Dockerfile

@@ -7,10 +7,11 @@ RUN cd /go/src/github.com/jbenet/go-ipfs/cmd/ipfs && go install
 RUN echo -n "#!/bin/bash\nipfs init\nipfs config Addresses.API /ip4/0.0.0.0/tcp/5001\nipfs config Addresses.Gateway /ip4/0.0.0.0/tcp/8080\nipfs daemon" > /usr/local/bin/start_ipfs && \
     chmod 755 /usr/local/bin/start_ipfs
 
-EXPOSE 4001 5001 4002/udp 8080
+EXPOSE 4001 5001 8080
+# 4001 = Swarm, 5001 = API, 8080 = HTTP transport
 
 ENTRYPOINT ["/usr/local/bin/start_ipfs"]
 
 # build:    docker build -t go-ipfs .
-# run:      docker run -p 4001:4001 -p 5001:5001 go-ipfs:latest daemon --init
-# run:      docker run -p 4002:4002/udp -p 4001:4001 -p 5001:5001 go-ipfs:latest daemon --init
+# run:      docker run -p 4001:4001 -p 5001:5001 go-ipfs:latest
+# run:      docker run -p 8080:8080 -p 4001:4001 -p 5001:5001 go-ipfs:latest