/bin/sh: 1: rsync: not found

[schau87]

I am getting the below message when trying to build from the Dockerfile:
$docker build -f Dockerfile --network=host -t gcc9-rpi-zero .

  HDRINST usr/include/asm/mman.h
  HDRINST usr/include/asm/statfs.h
  HDRINST usr/include/asm/ioctl.h
  HDRINST usr/include/asm/socket.h
  HDRINST usr/include/asm/kvm_para.h
  HDRINST usr/include/asm/sockios.h
  HDRINST usr/include/asm/siginfo.h
  HDRINST usr/include/asm/unistd-eabi.h
  HDRINST usr/include/asm/termbits.h
  HDRINST usr/include/asm/unistd-common.h
  HDRINST usr/include/asm/shmbuf.h
  HDRINST usr/include/asm/param.h
  HDRINST usr/include/asm/bitsperlong.h
  HDRINST usr/include/asm/poll.h
  HDRINST usr/include/asm/resource.h
  HDRINST usr/include/asm/unistd-oabi.h
  HDRINST usr/include/asm/errno.h
  HDRINST usr/include/asm/bpf_perf_event.h
  HDRINST usr/include/asm/sembuf.h
  HDRINST usr/include/asm/msgbuf.h
  HDRINST usr/include/asm/termios.h
  HDRINST usr/include/asm/ipcbuf.h
  INSTALL /opt/cross-pi-gcc/arm-linux-gnueabihf/include
/bin/sh: 1: rsync: not found
make: *** [Makefile:1212: headers_install] Error 127
The command '/bin/sh -c make ARCH=arm INSTALL_HDR_PATH=/opt/cross-pi-gcc/arm-linux-gnueabihf headers_install' returned a non-zero code: 2

[AskeyNil]

too

[Pro]

Fixed in #10. Thanks @praxx