Add dockerfile to run on railway

Author: paulocsanz

Dockerfile

@@ -0,0 +1,14 @@
+FROM rust:1.71 AS builder
+WORKDIR /app
+COPY . .
+
+RUN cargo build --release
+
+FROM ubuntu:latest
+RUN apt-get update && apt-get install -y libssl-dev pkg-config
+RUN apt-get install -y ca-certificates
+
+WORKDIR /app
+COPY --from=builder /app/target/release/server-bin /usr/local/bin/server
+ENTRYPOINT ["/usr/local/bin/server"]
+