diff --git a/dev/docker/Dockerfile b/dev/docker/Dockerfile
index 23e42d554a6b7d84a76ab1af598b25620b358313..d4b57988ca52777a54a8bbd9d2dcfc14c5b03c36 100644
--- a/dev/docker/Dockerfile
+++ b/dev/docker/Dockerfile
@@ -38,6 +38,8 @@ FROM busybox
 # Copy stuff from builder
 COPY --from=builder /opt/rdpgw /opt/rdpgw
 COPY --from=builder /etc/passwd /etc/passwd
+# trust root CA
+COPY --from=builder /etc/ssl/certs /etc/ssl/certs
 # COPY --from=builder /bin/sh /bin/sh
 # COPY rdpgw.yaml
 COPY rdpgw.yaml /opt/rdpgw/rdpgw.yaml