update README

README.md

@@ -99,11 +99,33 @@ $ zig build test
 Test the so
 -----------
 
-```
-sed -i 's/\(\(passwd\|group\).*files\)$/\1 turbo/' /etc/nsswitch.conf
-```
+Build:
 
-Other commands will be documented as they are implemented.
+    zig build -Dtarget=x86_64-linux-gnu.2.31 -Dcpu=x86_64_v3 -Drelease-fast=true -Dstrip=true
+
+Generate `db.turbo`:
+
+    zig-out/bin/turbonss-unix2db --passwd /etc/passwd --group /etc/group
+    zig-out/bin/turbonss-analyze db.turbo
+    <...>
+
+Run a test container:
+
+    $ docker run -ti --rm --privileged -v `pwd`:/etc/turbonss -w /etc/turbonss debian:bullseye
+    # cp zig-out/lib/libnss_turbo.so.2 /lib/x86_64-linux-gnu
+    # sed -i 's/\(\(passwd\|group\).*files\)$/\1 turbo/' /etc/nsswitch.conf
+
+And knock yourself out:
+
+    getent passwd
+    getent group
+    id root
+
+This is probably not very interesting; you may want to take a larger corpus of
+/etc/passwd and /etc/group for more interesting results.
+
+Dependencies
+------------
 
 This project uses [git subtrac][git-subtrac] for managing dependencies. They
 work just like regular submodules, except all the refs of the submodules are in