build: add docker build files

Dockerfile

@@ -0,0 +1,43 @@
+
+# ── Javascript ──────────────────────────────────────────────────────────
+
+FROM oven/bun:1 AS base-js
+WORKDIR /usr/src/app
+
+# install dependencies into temp directory
+# this will cache them and speed up future builds
+FROM base-js AS install
+COPY package.json bun.lock /temp/dev/
+RUN cd /temp/dev && bun install --frozen-lockfile
+
+# copy node_modules from temp directory
+# then copy all (non-ignored) project files into the image
+FROM base-js AS prerelease
+COPY --from=install /temp/dev/node_modules node_modules
+COPY frontend frontend
+COPY .devfiles/scripts/build-frontend.ts .devfiles/scripts/build-frontend.ts
+
+ENV NODE_ENV=production
+RUN bun ./.devfiles/scripts/build-frontend.ts
+
+# ── Rust ────────────────────────────────────────────────────────────────
+
+FROM rust:slim AS base-rust
+
+WORKDIR /app
+
+COPY . .
+COPY --from=prerelease /usr/src/app/dist dist
+
+RUN cargo build --locked --release
+
+FROM scratch AS runner
+
+ENV RUST_LOG="compendium=debug,info"
+
+COPY --from=base-rust /app/target/release/compendium /
+
+EXPOSE 3000
+
+ENTRYPOINT ["./compendium"]
+CMD ["./compendium"]