Weird, that fixed it. I assumed that since the URL was exactly the same whether I ran it with ./nodebb start or ./nodebb dev, it couldn't be related to cache. I suppose I just don't know enough about how caches work.
NodeBB-Version: v1.10.2 (GitHub master)
Docker: 18.09.0, build 4d60db4
Language: German (de-DE)
Installation directory: /usr/src/app
When building a NodeBB docker image, following warning appear. Maybe it would be good if NodeBB would update these:
npm WARN deprecated email@example.com: CircularJSON is in maintenance only, flatted is its successor.
npm WARN deprecated firstname.lastname@example.org: This version is no longer maintained. Please upgrade to the latest version.
npm WARN deprecated email@example.com: This version is no longer maintained. Please upgrade to the latest version.
npm WARN deprecated firstname.lastname@example.org: This version is no longer maintained. Please upgrade to the latest version.
npm WARN lifecycle email@example.com~install: cannot run in wd firstname.lastname@example.org neon build >> build.log 2>&1 || exit 0 (wd=/usr/src/app/node_modules/benchpressjs/rust/benchpress-rs)
npm notice created a lockfile as package-lock.json. You should commit this file.