fatal: [localhost]: FAILED! => {"changed": false, "cmd": ["md5sum", "-c", "md5sum.txt"], "delta": "0:00:00.002383", "end": "2025-05-04 00:21:49.264751", "msg": "non-zero return code", "rc": 1, "start": "2025-05-04 00:21:49.262368", "stderr": "md5sum: md5sum.txt: No such file or directory", "stderr_lines": ["md5sum: md5sum.txt: No such file or directory"], "stdout": "", "stdout_lines": []}
So it seemed to me, that the md5sum.txt is missing in the latest vyos nightly build.
I tested this hypothesis, by skipping the curl command after putting an older vyos version (vyos-2025.04.25-0019-rolling-generic-amd64) as vyos.iso into /tmp. This worked without any problem. (I also downloaded the latest vyos version (vyos-2025.05.04-0021-rolling-generic-amd64) via browser, without using the curl command, and put it into /tmp as vyos.iso. The same error message appeared again.) So I think my hypothesis is true.