add dockerfile

.dockerignore

@@ -0,0 +1,4 @@
+.git/
+devel/
+.envrc
+target/

Dockerfile

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+FROM rust:1.71.0-alpine as app
+
+WORKDIR /app
+
+RUN apk add openssl-dev musl-dev musl g++
+COPY . /app
+
+RUN \
+  --mount=type=cache,target=/app/target,rw \
+  --mount=type=cache,target=/usr/local/cargo/registry,rw \
+  cargo build --release && \
+  cp /app/target/release/elric-rs /app/elric-rs
+
+
+FROM alpine:3.17.3
+
+RUN mkdir /app
+
+RUN apk add libc6-compat
+
+COPY --from=app /app/elric-rs /app/elric-rs
+
+WORKDIR /app
+
+ENTRYPOINT ["./elric-rs"]
+EXPOSE 3000
+ENV RUST_LOG="info"
+ENV PORT="3000"