docker-for-mac: add certificates
This fixes the error starting the `metadata` package, as described in
@@ -7,6 +7,7 @@ init:
- linuxkit/init:6d11a1f9d299d3425e78cce80dfba8b236d20412
- linuxkit/runc:a1b564248a0d0b118c11e61db9f84ecf41dd2d2a
- linuxkit/containerd:7d97282aebe36040fcdd3378a95562d440d34a9d
+ - linuxkit/ca-certificates:e44b0a66df5a102c0e220f0066b0d904710dcb10
onboot:
# support metadata for optional config in /var/config
- name: metadata
