diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 0383f52..aac8a4f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -9,7 +9,7 @@ jobs:
 
     services:
       postgres:
-        image: postgis/postgis
+        image: postgis/postgis:15-3.4
         env:
           POSTGRES_USER: osmcal
           POSTGRES_PASSWORD: postgres
diff --git a/README.md b/README.md
index 135e40e..f63bdb8 100644
--- a/README.md
+++ b/README.md
@@ -13,62 +13,22 @@ Please look at [OpenStreetMap Calendar Documentation](https://osmcal.org/documen
 
 ## Developer Documentation
 
-This is a Django application, it uses [poetry](https://python-poetry.org) for managing dependencies. Please look at their documentation for installation instructions.
+The repo contains a [dev container](https://containers.dev) configuration, so you can develop without having to install all the dependencies on your machine manually. VS Code and PyCharm/IntelliJ have integrated support and you can even use Github Codespaces.
 
-We support Python ≥ 3.8 and PostgreSQL ≥ 10.
+Alternatively you can install like any other Python/Django project. We're using [poetry](https://python-poetry.org) for managing dependencies. Please look at their documentation for installation instructions.
 
-### Database
-
-You need a running PostgreSQL database. There are two options: Running it locally or using Docker.
-
-#### A) Local Installation
-Create a PostgreSQL user called `osmcal` and a database `osmcal` with the owner set to `osmcal`. E.g.
-```
-CREATE ROLE osmcal WITH LOGIN ENCRYPTED PASSWORD 'postgres';
-CREATE DATABASE osmcal OWNER osmcal;
-CREATE EXTENSION postgis;
-```
-
-Make sure you have following line in your [pg_hba.conf](https://www.postgresql.org/docs/12/auth-pg-hba-conf.html), so osmcal need a password to log in:
-```
-local    all    all        trust
-```
-Alternatively, you can set your DB password using the `POSTGRES_PASSWORD` environment variable, c.f. the following section on Docker.
-
-
-#### B) Docker
-
-```
-docker run -e POSTGRES_DB='osmcal' -e POSTGRES_USER='osmcal' -e POSTGRES_PASSWORD='postgres' --name osmcaldb postgis/postgis
-```
-
-*Note:* You can use `docker start osmcaldb` and `docker stop osmcaldb` after first run of the command above.
-
-When using database in docker with the command above, the database host is:
-
-```
-export OSMCAL_PG_HOST=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' osmcaldb)
-```
-
-and database password is:
-
-```
-export OSMCAL_PG_PASSWORD='postgres'
-```
+We support Python ≥ 3.11 and PostgreSQL ≥ 15. (Older versions might work, but no guarantees).
 
-### Virtual Environment
+### Database
 
-Use *poetry* to create a virtual environment. Then, install the dependencies:
+You need a running PostgreSQL database with PostGIS installed. If you're using the dev container, the DB is automatically started and set up.
 
-```
-cd openstreetmap-calendar
-poetry install
-```
+If you set this up manually, make sure you have an empty DB before starting. By default we're using
 
 ### Running Tests
 
 ```
-poetry run ./manage.py test
+make test
 ```
 
 ### Developer Server
@@ -78,38 +38,21 @@ In order to facilitate testing, you can use a fake login locally without having
 To prepare for application launch run the database migrations:
 
 ```
-poetry run ./manage.py migrate
+make migrate
 ```
 
 and then the local server:
 
 ```
-poetry run ./manage.py runserver
+make devserver
 ```
 
 If you need test data, you can load some using:
 
 ```
-poetry run ./manage.py loaddata osmcal/fixtures/demo.yaml
+make fixtures
 ```
 
 ## API Documentation
 
 The API is described using OpenAPI 3, the schema is located in `/api/schema/`. The currently live version is [visible here](https://osmcal.org/static/api.html).
-
-## OAuth Setup
-
-If want to test the OAuth flow, you need to create an OAuth app first:
-
-1. Go to osm.org -> My Settings -> oauth settings -> bottom of the page (My Client Applications) -> Register your application.
-2. Fill `Name` and `Main Application URL`. No restrictions here.
-3. You *must* fill `Callback URL` with `http://localhost:8000/oauth/callback`.
-4. Mark `read their user preferences.`
-5. Click `Register`.
-
-When the application is registered on osm.org, set the respective environment variables used for oauth and copy *Consumer Key* and *Consumer Secret*:
-
-```
-export OSMCAL_OSM_KEY='...'
-export OSMCAL_OSM_SECRET='...'
-```