unable to build the docker and setup.sh failed

[S1utbunny]

when I try to build the docker, I met the error as : => ERROR [42/53] RUN sh pack.sh 0.3s

[42/53] RUN sh pack.sh: 0.288 sh: 0: Can't open pack.sh

---

Dockerfile:79

77 |
78 | WORKDIR /home/ubuntu/packer/linux_initramfs/ 79 | >>> RUN sh pack.sh 80 |
81 | WORKDIR /home/ubuntu/packer/packer/compiler/

ERROR: failed to build: failed to solve: process "/bin/sh -c sh pack.sh" did not complete successfully: exit code: 127 when I add chmod +x pack.sh, it told me there is no file named pack.sh.