From 729aac9bd1b09bbdc048da563aaf0f5af6b69baf Mon Sep 17 00:00:00 2001
From: Simon Li <orpheus+devel@gmail.com>
Date: Sat, 6 May 2023 00:38:05 +0100
Subject: [PATCH] Why is BUILDPLATFORM linux/arm64 when buliding arm64 on a gh
 amd64 runner?

---
 Dockerfile | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 3dae79a4..b134c24e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -59,7 +59,11 @@ COPY . .
 
 ######################################################################
 # The JupyterHub wheel is pure Python so can be built once on any architecture
-FROM --platform=${BUILDPLATFORM:-linux/amd64} base-builder AS jupyterhub-builder
+# TODO: re-enable BUILDPLATFORM instead of forcing to linux/amd64
+#FROM --platform=${BUILDPLATFORM:-linux/amd64} base-builder AS jupyterhub-builder
+FROM --platform=linux/amd64 base-builder AS jupyterhub-builder
+
+RUN echo "BUILDPLATFORM=${BUILDPLATFORM} TARGETPLATFORM=${TARGETPLATFORM}"
 
 ARG PIP_CACHE_DIR=/tmp/pip-cache
 RUN --mount=type=cache,target=${PIP_CACHE_DIR} \