Add docker things

Dockerfile

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+ARG PYTHON_VERSION=3.10
+FROM python:${PYTHON_VERSION}-slim
+
+# avoid .pyc and buffering stdout/stderr
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# add non-root user
+ARG UID=1000
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    --uid "${UID}" \
+    --home "/app" \
+    bot
+
+# install requirements
+RUN --mount=type=cache,target=/root/.cache/pip \
+    --mount=type=bind,source=requirements.txt,target=requirements.txt \
+    pip install -r requirements.txt
+
+# copy i18n files
+COPY --chown=bot i18n.yaml i18n/i18n.yaml
+VOLUME i18n/
+
+# copy default configs
+WORKDIR /app
+COPY --chown=bot mybot mybot
+
+# preapre environment
+ENV SS_TYPE=memory
+ENV I18N_PATH=/i18n/i18n.yaml
+
+# set user
+USER bot
+
+CMD ["python3", "-m", "mybot"]

docker-compose.yml

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+version: "3.0"
+
+volumes:
+  i18n: {}
+  redis-config: {}
+  redis-data: {}
+
+services:
+  bot:
+    build:
+      dockerfile: Dockerfile
+      context: .
+    depends_on: [redis]
+    restart: unless-stopped
+    volumes:
+      - i18n:/i18n
+    env_file: .env
+    environment:
+      - SS_TYPE=memory  # redis currently is broken
+      - SS_REDIS_HOST=redis
+      - SS_REDIS_PORT=6379
+      - SS_REDIS_PASSWORD=bot
+
+  redis:
+    image: redis
+    restart: unless-stopped
+    volumes:
+      - redis-config:/etc/redis
+      - redis-data:/data
+    command: redis-server --save 20 1 --loglevel warning --requirepass bot