add ffmpeg and docker compose to readme

README.md

@@ -8,6 +8,7 @@ Install dependencies:
 
 - FFI: `libffi`
 - NaCl: `libnacl` or `libsodium`
+- FFmpeg: `ffmpeg`
 
 Copy `.env.example` to `.env`:
 
@@ -25,27 +26,25 @@ Copy `.env.example` to `.env`:
 
 ## Setup
 
-### ...with pdm
+### ...with PDM
 
 ```sh
 pdm install --prod
 pdm run python app.py
 ```
 
-### ...with requirements.txt
+### ...with requirements.txt and virtualenv
-
-#### ....and pipenv
-
-```sh
-pipenv install
-pipenv run python app.py
-```
-
-#### ....and virtualenv
 
 ```sh
 virtualenv .venv
 source .venv/bin/activate
 pip install -r requirements.txt
 python app.py
+```
+
+### ...with Docker Compose
+
+```sh
+docker compose build
+docker compose up -d
 ```