fix typo in man page
- resolve
@@ -56,7 +56,7 @@ cloned locally and then sent as the context.
name and value of a **buildarg**.
For example, if you want to pass a value for `http_proxy`, use
- `--bulid-arg=http_proxy="http://some.proxy.url"`
+ `--build-arg=http_proxy="http://some.proxy.url"`
Users pass these values at build-time. Docker uses the `buildargs` as the
environment context for command(s) run via the Dockerfile's `RUN` instruction
