docker: Fix/workaround docker buildx bug (#22262)

Fix #22261 Signed-off-by: Ryan Northey <ryan@synca.io>
envoyproxy · Jul 19, 2022 · f61d984 · f61d984
1 parent 094659f
commit f61d984
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/ci/Dockerfile-envoy b/ci/Dockerfile-envoy
@@ -5,7 +5,8 @@ ARG ENVOY_VRP_BASE_IMAGE=envoy
 
 FROM scratch AS binary
 
-ARG TARGETPLATFORM=linux/amd64
+ARG TARGETPLATFORM
+ENV TARGETPLATFORM=${TARGETPLATFORM:-linux/amd64}
 ARG ENVOY_BINARY=envoy
 ARG ENVOY_BINARY_SUFFIX=_stripped
 ADD ${TARGETPLATFORM}/build_${ENVOY_BINARY}_release${ENVOY_BINARY_SUFFIX}/envoy* /usr/local/bin/