Solve the problem of copy failed: stat / var / lib / docker / TMP / docker builder 455335933 / opt: no such file or directory

1. Error reporting

2. Dockerfile file

3. The reasons for

Dockerfile lines beginning with # are treated as comments. If a # comment is used after a valid instruction, it will be treated as a parameter, resulting in an error

4. Solution: just remove the comment, or put the comment on a separate line