Add docker build

.dockerignore

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+Dockerfile
+target/

.gitignore

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 /target
-Cargo.lock
 config.toml

Dockerfile

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+FROM rust:slim as builder
+
+RUN apt-get update && apt-get install -y libssl-dev pkg-config
+# build deps only first for build cache
+WORKDIR /usr/src
+RUN USER=root cargo new chimemon
+COPY Cargo.toml Cargo.lock /usr/src/chimemon/
+WORKDIR /usr/src/chimemon
+RUN cargo build --release
+COPY . .
+RUN cargo build --release
+
+FROM debian:bullseye-slim
+WORKDIR /app
+COPY --from=builder /usr/src/chimemon/target/release/chimemon chimemon
+CMD ["/app/chimemon"]