Merge pull request #4272 from kpcyrd/safer-readme

README.md: Suggest safer docker flags

README.md

@@ -253,7 +253,7 @@ IPFS files that will persist when you restart the container.
 
 Start a container running ipfs and expose ports 4001, 5001 and 8080:
 
-    docker run -d --name ipfs_host -v $ipfs_staging:/export -v $ipfs_data:/data/ipfs -p 8080:8080 -p 4001:4001 -p 5001:5001 ipfs/go-ipfs:latest
+    docker run -d --name ipfs_host -v $ipfs_staging:/export -v $ipfs_data:/data/ipfs -p 4001:4001 -p 127.0.0.1:8080:8080 -p 127.0.0.1:5001:5001 ipfs/go-ipfs:latest
 
 Watch the ipfs log: