Dockerfile added

Dockerfile

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+FROM rust:latest as builder
+LABEL authors="karcsesz"
+
+ARG target=x86_64-unknown-linux-musl
+
+RUN apt update && apt install -y musl-tools musl-dev
+RUN update-ca-certificates
+RUN rustup target add $target
+
+WORKDIR /fingerlink
+
+COPY . .
+
+RUN cargo build --target $target --release
+
+FROM scratch
+
+WORKDIR /fingerlink
+
+COPY --from=builder /fingerlink/target/x86_64-unknown-linux-musl/release/fingerlink /fingerlink/fingerlink
+
+ENTRYPOINT ["/fingerlink/fingerlink", "serve"]
+CMD	 ["--help"]