Add Dockerfile

Dockerfile

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+FROM rust:alpine
+RUN apk add deno pkgconfig libressl-dev musl-dev
+
+WORKDIR /FeDirect
+
+COPY --link . ./
+
+ENV ROCKET_ADDRESS=0.0.0.0
+
+RUN cargo build --release
+
+CMD ["/FeDirect/target/release/fedirect"]