Improve README.md

Author: NilsIrl

README.md

@@ -12,8 +12,19 @@ $ dockerc --image docker://oven/bun --output bun
 $ zig-out/bin/dockerc --image docker-daemon:mysherlock-image:latest --output sherlock_bin
 ```
 
+The output binary can then be called as you would with usual binaries. You can
+also specify `-e`, and `-v` in the same way you would when using `docker run`.
+Networked services running inside the container can be accessed directly without
+having to specify `-p`.
+
 Skopeo is used for loading images, for other locations refer to [its documentation][1].
 
+## Build from source
+
+```
+$ zig build -Doptimize=ReleaseSafe -Dtarget=x86_64-linux-musl
+```
+
 ## Features
 
 - [X] Compiler docker images into portable binaries
@@ -22,10 +33,11 @@ Skopeo is used for loading images, for other locations refer to [its documentati
 - [X] x86_64 support
 - [ ] arm64 support
 - [X] Supports arguments
-- [X] [Supports environment variables specifying environment variables][2]
-- [ ] Support `-v`
+- [X] [Supports specifying environment variables using `-e`][2]
+- [X] [Supports specifying volumes using `-v`][3]
 - [ ] Support other [arguments][0]...
 
 [0]: https://docs.docker.com/engine/reference/commandline/container_run/
 [1]: https://github.com/containers/skopeo/blob/main/docs/skopeo.1.md#image-names
 [2]: https://docs.docker.com/reference/cli/docker/container/run/#env
+[3]: https://docs.docker.com/reference/cli/docker/container/run/#volume