Build multi-arch container images across stack
diff --git a/core/nebula/controller/Dockerfile.controller b/core/nebula/controller/Dockerfile.controller
index fa0b2b7..82586e4 100644
--- a/core/nebula/controller/Dockerfile.controller
+++ b/core/nebula/controller/Dockerfile.controller
@@ -1,9 +1,11 @@
FROM alpine:latest
-COPY controller /usr/bin/nebula-controller
+ARG TARGETARCH
+
+COPY controller_${TARGETARCH} /usr/bin/nebula-controller
RUN chmod +x /usr/bin/nebula-controller
-RUN wget https://github.com/slackhq/nebula/releases/download/v1.4.0/nebula-linux-arm64.tar.gz -O nebula.tar.gz
+RUN wget https://github.com/slackhq/nebula/releases/download/v1.4.0/nebula-linux-${TARGETARCH}.tar.gz -O nebula.tar.gz
RUN tar -xvf nebula.tar.gz
RUN mv nebula-cert /usr/bin
RUN chmod +x /usr/bin/nebula-cert