diff --git a/red/Cross.toml b/red/Cross.toml
new file mode 100644
index 0000000..d97aed6
--- /dev/null
+++ b/red/Cross.toml
@@ -0,0 +1,2 @@
+[target.armv7-unknown-linux-gnueabihf]
+dockerfile = "./Dockerfile"
diff --git a/red/Dockerfile b/red/Dockerfile
new file mode 100644
index 0000000..0c9fe27
--- /dev/null
+++ b/red/Dockerfile
@@ -0,0 +1,2 @@
+FROM ghcr.io/cross-rs/armv7-unknown-linux-gnueabihf
+RUN dpkg --add-architecture armhf && apt-get update && apt-get install --assume-yes libudev-dev:armhf
diff --git a/red/justfile b/red/justfile
index 8945968..8fdf69f 100644
--- a/red/justfile
+++ b/red/justfile
@@ -1,7 +1,7 @@
 url := "olimex@muele.local"
 
 build:
-  cargo build --target=armv7-unknown-linux-gnueabihf
+  cross build --target=armv7-unknown-linux-gnueabihf
 
 rrun:
   #scp -r ./src {{url}}:red/