WIP: Test if this fixes the multiarch docker builds

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2560>

api/Dockerfile

@@ -15,6 +15,7 @@ FROM alpine:3.17 as builder
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 ARG PIP_NO_CACHE_DIR=1
+ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
 
 RUN set -eux; \
   apk add --no-cache \

changes/changelog.d/multiarch.bugfix

@@ -0,0 +1 @@
+Fix multiarch docker builds #2211