chore: add Dockerfile and compose.yml

.env.sample

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+TOKEN=
+MAIN_GROUP_ID=

.gitignore

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+.env

Dockerfile

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+FROM python:3.12-bookworm
+STOPSIGNAL SIGINT
+WORKDIR /app
+
+# make ru_RU.UTF-8 locale available
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install \
+    --no-install-recommends -y locales && rm -r /var/lib/apt/lists/* && \
+    printf "en_US.UTF-8 UTF-8\nru_RU.UTF-8 UTF-8" >/etc/locale.gen && \
+    dpkg-reconfigure --frontend=noninteractive locales
+
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+COPY main.py .
+CMD ["python3", "-u", "main.py"]

compose.yml

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+services:
+  deadline_bot:
+    build: .
+    env_file: .env
+    volumes:
+      - /etc/localtime:/etc/localtime:ro
+    restart: unless-stopped