cache build

Dockerfile

@@ -0,0 +1,38 @@
+FROM scratch AS fs
+
+COPY . /usr/src/gitredditor
+
+FROM rust:1.34.1 AS build
+
+WORKDIR /usr/src/
+
+ENV USER root
+
+RUN cargo new --lib gitredditor
+
+WORKDIR /usr/src/gitredditor
+
+COPY --from=fs /usr/src/gitredditor/Cargo.toml /usr/src/gitredditor/Cargo.lock ./
+
+RUN cargo build --release
+
+COPY --from=fs /usr/src/gitredditor/src src
+
+RUN cargo build --release
+
+FROM ubuntu
+
+
+RUN apt update && apt install -y libcurl3 git -y && rm -rf /var/lib/{apt,dpkg,cache,log}
+
+COPY --from=build /usr/src/gitredditor/target/release/gitredditor /usr/local/bin
+
+COPY --from=fs /usr/src/gitredditor/src /usr/src/gitredditor/src
+
+VOLUME /repo
+
+WORKDIR /repo
+
+ENTRYPOINT gitredditor
+
+CMD ["-r", "$REDDIT_USERNAME", "/repo"]