Update README

README.md

@@ -10,6 +10,27 @@ This crate is a work in progress.
 
 See the documentation for further information: <https://docs.rs/clevis>.
 
+## Tang Setup
+
+You need a tang server running in order to use this crate. The
+[padhihomelab/tang](https://hub.docker.com/r/padhihomelab/tang) image is the
+easiest way to get started with this.
+
+```sh
+docker run --rm -d \
+    -v $(pwd)/tang-db:/db \
+    -e ENABLE_IPv6=1 \
+    -p 11697:8080 \
+    --name tang-backend \
+    padhihomelab/tang
+```
+
+This will store the Tang keys in the directory at `./tang-db`, adjust this as
+needed.
+
+Any port can be selected (this crate uses `11697` for examples since it is the
+ASCII of `ta` (as in `tang`), so easy to remember).
+
 ## Licensing
 
 Since this project takes heavy influence from the original [clevis], it retains

rustfmt.toml

@@ -0,0 +1,7 @@
+# Most of these are nightly only, but they are needed
+imports_granularity = "Module"
+newline_style = "Unix"
+group_imports = "StdExternalCrate"
+format_code_in_doc_comments = true
+format_macro_bodies = true
+format_macro_matchers = true