2f1a862b83
Previously, the preview server docker image was based on Debian 8 (jessie). Recently, `jessie-updates` and `jessie-backborts` were removed from the Debian mirrors ([more info][1]), thus breaking new builds of the image. Instead of updating `/etc/apt/sources.list` to remove the obsolete sources, this commit upgrades to Debian 9 (stretch). (The GCE VM running the preview server docker container was also upgraded from Debian 8 to 9 this morning.) --- Other changes: - Removed dependency on `chkconfig`, which is not supported on Debian 9. - Installing `nginx` from the regular repositories (instead of `*-backports). - Upgraded to `pm2` v3, which can handle hooking itself up to system startup better (without `chkconfig` - see above). - Updated tests to reflect the fact that `nginx` has dropped the reason phrase in response status lines for HTTP/2 (in compliance with [the spec][2]). (HTTP/1.1: `HTTP/1.1 200 OK` | HTTP/2: `HTTP/2 200`) [1]: https://www.lucas-nussbaum.net/blog/?p=947 [2]: https://http2.github.io/http2-spec/#rfc.section.8.1.2.4 PR Close #29976 |
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