improve readme

README.md

@@ -15,13 +15,41 @@ we might do it in Albatros...
 
 Requirements: Nomad, Consul, Gitea
 
+Prepare your nomad cluster:
+
 ```
-export ALBATROS_URL="https://albatros.deuxfleurs.fr" 
 nomad namespace apply -description "Continuous Integration" ci
 nomad run hcl/builder.hcl
-go run main.go
 ```
 
+Run from the terminal directly:
+
+```
+export ALBATROS_URL="https://albatros.deuxfleurs.fr" 
+export NOMAD_ADDR=...
+export NOMAD_CLIENT_CERT=...
+export NOMAD_CLIENT_KEY=...
+export NOMAD_CACERT=...
+export CONSUL_HTTP_ADDR=...
+export CONSUL_CLIENT_CERT=...
+export CONSUL_CLIENT_KEY=...
+export CONSUL_CACERT=...
+./albatros
+```
+
+Run from docker:
+
+```
+docker run --rm -it dxflrs/albatros:xxx
+```
+
+where `xxx` is the commit sha you want.
+
+## Builders
+
+Currently, we propose a single, nix-based builder.
+I am currently working on using proper caching on it.
+
 ## Register a build
 
 Add to Consul a key in albatros hierarchy