Move Docker stuff to its own directory

docker/Dockerfile

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+FROM python:3
+
+RUN useradd --system --gid root --uid 1001 uwsgi
+RUN pip install uwsgi psycopg2_binary Flask Flask-Admin Flask-SQLAlchemy Flask-Bcrypt \
+        Flask-Security-Too bcrypt email_validator pyyaml rst2html
+RUN mkdir -p /app
+WORKDIR /app
+COPY . /app
+
+EXPOSE 3031
+CMD ["uwsgi", "--master", "--workers", "4", "--socket", "0.0.0.0:3031", "--protocol", "uwsgi", \
+     "--plugin", "python3", "--uid", "uwsgi", "--wsgi", "libertywiki.wsgi"]

docker/docker-compose.example.yaml

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+version: '3'
+services:
+  wiki:
+    build:
+      context: .
+    environment:
+      - SQLALCHEMY_DATABASE_URI=postgresql://wiki:wiki@postgres/wiki
+      - SECRET_KEY=super-secret-key-replace-me
+      - SECURITY_PASSWORD_SALT=password-salt-replace-me
+  postgres:
+    image: postgres:14
+    environment:
+      - POSTGRES_USER=wiki
+      - POSTGRES_PASSWORD=wiki
+      - POSTGRES_DB=wiki
+  nginx:
+    image: nginx
+    volumes:
+      - "./nginx.conf:/etc/nginx/conf.d/default.conf:ro"
+    ports:
+      - "8000:80"

docker/nginx.conf

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+server {
+    listen       80;
+    listen  [::]:80;
+    server_name _;
+
+    location / {
+        include uwsgi_params;
+        uwsgi_pass wiki:3031;
+    }
+}