started work on docker stuff

.dockerignore

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+__pycache__
+config.json
+planning.txt
+README.md
+.git
+.vscode

Dockerfile

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+FROM python:3.7-slim-buster
+WORKDIR /fedibooks
+COPY . fedibooks
+RUN pip install -r requirements.txt

docker-compose.yml

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+version: '3'
+services: 
+  fedibooks:
+    build: .
+    links:
+      - db
+    ports:
+      5000:5000
+  db:
+    image: mariadb/server:10.4
+    environment:
+      MARIADB_ROOT_PASSWORD: root
+      MARIADB_DATABASE: fedibooks
+      MARIADB_USER: fedibooks
+      MARIADB_PASSWORD: fedibooks