Add docker file

This makes the app a lot easier to deploy and to self host. ^^

.dockerignore

@@ -0,0 +1,5 @@
+bettercal.db
+.venv/
+node_modules/
+__pycache__/
+.github/

Dockerfile

@@ -0,0 +1,12 @@
+FROM node:latest as tailwindbuild
+WORKDIR /app
+COPY . .
+RUN npm install
+RUN npx tailwindcss -i templates/template.css -o static/style.css
+
+FROM python:latest as pythonbuild
+WORKDIR /app
+COPY --from=tailwindbuild /app .
+RUN pip install -r requirements.txt
+
+ENTRYPOINT ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]

README.md

@@ -41,6 +41,20 @@ flag to the tailwind command.
 **Warning:** The flask server here cannot be used in production and is optimized
 for development comfort.
 
+## Build with Docker
+
+```bash
+docker build -t bettercal .
+docker run -it --rm -p 5000:5000 bettercal
+```
+
+The server should now start at http://localhost:5000
+
+This approach can be used in production. However, statistics will die with the 
+container, but they can be preserved by adding the 
+`--mount type=bind,source="$(pwd)"/bettercal.db,target=/app/bettercal.db` argument to the 
+`docker run` command.
+
 ## How we deploy 
 
 In production we use the [gunicorn](https://gunicorn.org/) server.