feat: add Docker build pipeline

Dockerfile

@@ -0,0 +1,27 @@
+# 1. This tells docker to use the Rust official image
+FROM rustlang/rust:nightly-bullseye as BUILDER
+
+# Define WORKDIR
+WORKDIR /build
+
+# 2. Copy the files in your machine to the Docker image
+COPY ./ ./
+
+# Build your program for release
+RUN cargo build --release
+
+# Runner Step
+FROM rustlang/rust:nightly-bullseye as RUNNER
+
+# Define WORKDIR
+WORKDIR /app
+
+# Copy Binary and License
+COPY --from=BUILDER /build/target/release/rustysearch /app/
+COPY --from=BUILDER /build/LICENSE /app/
+
+# Expose Port
+EXPOSE 4000
+
+# Run the binary
+CMD ["/app/rustysearch"]