fix: add fallback to tag when branch could not be fetched via git

[Badmuts]

Description

In the docker image we don't include any git history and this breaks the logic to dynamically parse a version for the used CDN endpoints. With this fix we introduce a new CDN_DIST_TAG environment variable which can be used to fetch dist-tagged versions from npm (eg. alpha, beta, latest) and will resolve it to a release version (eg. latest -> 1.0.3, alpha -> 1.0.0-alpha.3). This is helpful to circumvent caching issues by browsers.

Type of change

Bug fix / improvement

Tests

Use a docker image with the CDN_DIST_TAG environment variable. Your console should log that it can't use git to determine the branch and it will fallback to the given tag.

Could not get branch via git; fallback to alpha
Using cdn https://cdn.jsdelivr.net/npm/openstad-components@1.0.0-alpha.3/dist

Tested on openstad-ams-staging cluster

Branch

Based of master/main, not development

[nlsvgtr]

Great, tnx :)

Could you add this to the management-panel as well.

[nlsvgtr]

I did notice an issue with readFileSync while using fs.promises, and fixed that. Please review those changes befor merging.

[Badmuts]

I can't approve my own PR but looks good to me!