When creating your own theme for Publli, you maybe want to list all posts regarding to one tag on a single page. This can be achieved by the following:
1. create an override folder as descibed here: https://getpublii.com/dev/theme-overrides/
2. copy the config.json from the original theme folder to the overrride folder and add something like
"postTemplates": {
"portfolio": "portfolio filter"
},as described here: https://cv.domagic.site/posts/alternative-post-template-with-filter-for-publii-cms
