diff --git a/.woodpecker.yaml b/.woodpecker.yaml
index fff2b36..32cfae9 100644
--- a/.woodpecker.yaml
+++ b/.woodpecker.yaml
@@ -1,22 +1,19 @@
 steps:
   build:
-    image: git.holgersson.xyz/nfr/alpine-with-gcc:3.19-20240121
+    image: git.holgersson.xyz/nfr/arm-none-eabi:debian11-20240121
     pull: true
     commands:
-      gcc main.c -o main
+      arm-none-eabi-gcc --specs=nosys.specs main.c -o main-arm-none-eabi-gcc.elf
 
-  test:
-    image: git.holgersson.xyz/nfr/alpine-with-gcc:latest
-    pull: true
-    commands:
-      ./main
+  # do not test arm32 bins on amd64 ;)
+  #test: {}
 
   publish:
     image: woodpeckerci/plugin-gitea-release
     settings:
         base_url: https://git.holgersson.xyz
         files:
-          - "main"
+          - "main*"
         checksum:
           - sha512
           - crc32
diff --git a/Dockerfile b/Dockerfile
index 32ce96e..0e798d4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,11 @@
-FROM alpine:3.19 as setup
-RUN apk upgrade && apk add gcc musl-dev
+# Debian bookworm is debian12.
+FROM debian:bookworm as setup
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update \
+  && apt-get install -y gcc-arm-none-eabi cmake
+RUN mkdir /build
 
 FROM scratch
 COPY --from=setup / /
+WORKDIR /build