根据文档，如果您从本地文件系统（而非URL）添加到Dockerfile中（带有目标路径，而不是路径+文件名），它将把文件解压缩到给定的目录中。

According to the documentation, if you pass an archive file from the local filesystem (not a URL) to ADD in the Dockerfile (with a destination path, not a path + filename), it will uncompress the file into the directory given.

如果< src>是本地tar归档文件，且压缩格式为
（身份，gzip，bzip2或xz），则将其解压缩为目录。
来自远程URL的资源未解压缩。复制或解压缩目录
时，其行为与tar -x相同：结果为
，并集为：

If <src> is a local tar archive in a recognized compression format (identity, gzip, bzip2 or xz) then it is unpacked as a directory. Resources from remote URLs are not decompressed. When a directory is copied or unpacked, it has the same behavior as tar -x: the result is the union of:

1）目标路径上存在的任何内容；以及2）
源树的内容，已解决冲突以支持 2。

1) Whatever existed at the destination path and 2) The contents of the source tree, with conflicts resolved in favor of "2." on a file-by-file basis.

尝试：

ADD /files/apache-stratos.zip /opt/

看看文件是否在那里，而无需进一步解压缩。

and see if the files are there, without further decompression.