Blog will be shown on:
https://projektmotor-webseite.test.projektmotor.de/blog
https://projektmotor-webseite.stage.projektmotor.de/blog
https://projektmotor.de/blog (not yet but it's currently WIP)
Simply create a new markdown file in posts folder with github markup style.
You can put images in subfolders of folder posts or in posts folders itself.
Create an entry in metadata.yaml See content of metadata.yaml for examples.
Immediatly via GitHub webhooks which are defined in this repository.
https://symfonycasts.com/blog => https://github.com/knpuniversity/blog
and
https://www.tomasvotruba.cz/ => https://github.com/TomasVotruba/tomasvotruba.cz