add Dockerfile

.dockerignore

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+# Docker files
+Dockerfile
+.dockerignore
+
+# Git files
+.git
+.github
+.gitignore
+LICENSE
+README.md
+
+# Cargo files
+**/*.rs.bk
+/target/

Dockerfile

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+# Build image
+FROM rust:slim-bullseye as build
+
+RUN apt-get update && apt-get install -y \
+    build-essential autoconf automake cmake libtool libssl-dev pkg-config
+
+WORKDIR "/app"
+
+# Cache cargo build dependencies by creating a dummy source
+RUN mkdir src
+RUN echo "fn main() {}" > src/main.rs
+COPY Cargo.toml ./
+COPY Cargo.lock ./
+RUN cargo build --release --locked
+
+COPY . .
+RUN cargo build --release --locked
+
+# Release image
+FROM debian:bullseye-slim
+
+RUN apt-get update && apt-get install -y python3-pip ffmpeg
+RUN pip install -U yt-dlp
+
+COPY --from=build /app/target/release/djheuel .
+
+CMD ["./djheuel"]

docker-compose.yml

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+---
+version: "2.1"
+services:
+  djheuel:
+    build: .
+    container_name: DJHeuel
+    restart: unless-stopped
+    environment:
+      - DISCORD_TOKEN=${DISCORD_TOKEN}
+      - DISCORD_APP_ID=${DISCORD_APP_ID}