What this snippet does
Prefixing the host address limits exposure to the local machine instead of every interface.
Expected output
0.0.0.0 not bound; only 127.0.0.1:5432
Why practise typing this
Typing networking code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Docker practice
- Publishing a portNetworking · beginner
- Reversed port mappingNetworking · beginner
- Service discovery by nameNetworking · intermediate
- No DNS on the default bridgeNetworking · intermediate
- localhost inside a containerNetworking · intermediate
- Reaching a service on the hostNetworking · intermediate