Merge pull request #9 from element-hq/gaelg/synapse-module-cp

Synapse module image needs cp binary

modules/restricted-guests/synapse/Dockerfile

@@ -1,7 +1,12 @@
 ARG DEBIAN_VERSION_NUMERIC=12
+
+# Now copy it into our base image.
+FROM gcr.io/distroless/base-nossl-debian${DEBIAN_VERSION_NUMERIC}:debug AS build
+
 FROM gcr.io/distroless/base-nossl-debian${DEBIAN_VERSION_NUMERIC}
 
 WORKDIR /src
 COPY synapse_guest_module /src/synapse_guest_module
+COPY --from=build /busybox/cp /bin/cp
 
 CMD ["cp", "-r", "/src/synapse_guest_module", "/modules"]