Add Dockerfile

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+# Based on https://alexbrand.dev/post/how-to-package-rust-applications-into-minimal-docker-containers/
+FROM rust:1.46.0 AS build
+
+MAINTAINER Jesse Morgan <jesse@jesterpm.net>
+
+WORKDIR /usr/src
+
+# Build the dependencies first
+# This should help repeated builds go faster.
+RUN USER=root cargo new s3-media-endpoint-rs
+WORKDIR /usr/src/s3-media-endpoint-rs
+COPY Cargo.toml Cargo.lock ./
+RUN cargo install --path .
+
+# Copy the source and build the application.
+COPY src ./src
+RUN cargo install --path .
+
+# Now build the deployment image.
+FROM debian:buster-slim
+# RUN apt-get update && apt-get install -y extra-runtime-dependencies && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y libssl1.1 ca-certificates
+COPY --from=build /usr/local/cargo/bin/s3-media-endpoint-rs .
+USER 999
+CMD ["./s3-media-endpoint-rs"]