Unable to convert local pdf file on server on docker

[ktaaaki]

Since access to the local file is not permitted from the Docker container, the downloaded pdf file viewed from the Chrome tab cannot be converted to html.

[ktaaaki]

If a bookmarklet downloads and sends the pdf, the server doesn't need to know the local path.
The long bookmarklet may seem dangerous, but I think it requires the least effort of users.

[ktaaaki]

It turned out that sending a local file from a bookmarklet is difficult from a security point of view.

On the other hand, the method proposed by @eitsupi, which sends a local file to a file server, can solve this issue without sacrificing convenience.