Force ownership of /home/data

Dockerfile

@@ -10,6 +10,7 @@ RUN rm -f /etc/ssh/ssh_host_* \
  && groupadd --non-unique --gid $GROUPID data \
  && useradd --non-unique --uid $USERID --gid $GROUPID --no-create-home --home-dir /home/data data \
  && mkdir -p /home/data \
+ && chown root:root /home/data \
  && mkdir -p /etc/ssh/host_keys/ \
  && echo "AuthorizedKeysFile $AUTHORIZED_KEYS_FILE" >> /etc/ssh/sshd_config \
  && echo "HostKey /etc/ssh/host_keys/ssh_host_ecdsa_key" >> /etc/ssh/sshd_config \