I'm trying to compile a LaTeX document as part of a Travis CI job. I need to use the 2017 version of TeX Live until a 2018 image for the Docker container I am using is released.
The suggestions online are to use ftp://tug.org/historic/systems/texlive/2017/
for the package repository which fails, because FTP does not work well with Travis CI's NAT implementation.
Are there any repository mirrors for historical versions of TeX Live that are available without using a file transfer protocol from the 1970s? Perhaps also with some integrity assurances? SFTP, HTTPS?
The standard CTAN mirrors don't include historical releases, as far as I can tell.
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