diff --git a/Dockerfile.runtime b/Dockerfile.runtime
index 8ddd768..675cd46 100644
--- a/Dockerfile.runtime
+++ b/Dockerfile.runtime
@@ -1,5 +1,5 @@
 # # Use the official golang:1.22.12-bookworm image for the final stage
-FROM www.gitgud.foo/thegrind/papibot-builder:latest
+FROM www.gitgud.foo/thegrind/papibot-builder:latest as build
 
 # # Create a group and user 'papibot'
 RUN groupadd -r papibot && useradd -r -g papibot papibot
diff --git a/README.md b/README.md
index 7965f61..993a445 100644
--- a/README.md
+++ b/README.md
@@ -14,4 +14,9 @@ Populate the discord bot keys
 
 `go run .`
 
-type `!` in any channel in the discord while you're in a voice channel.
\ No newline at end of file
+type `!` in any channel in the discord while you're in a voice channel.
+
+## Build new builder container image
+```
+docker build -t www.gitgud.foo/thegrind/papibot-builder:<tag> Dockerfile.builder
+```