chore: add Dockerfile for Dokploy deploy

Dockerfile

@@ -0,0 +1,27 @@
+# Build the SPA first so build.rs embeds web/dist via ARR_WEB_DIST.
+FROM node:22-bookworm-slim AS web
+WORKDIR /src
+ENV CI=true
+RUN corepack enable && corepack prepare pnpm@11.21.0 --activate
+COPY web/package.json web/pnpm-lock.yaml ./web/
+RUN pnpm -C web install --frozen-lockfile --config.dangerouslyAllowAllBuilds=true
+COPY web ./web
+RUN pnpm -C web build
+
+FROM rust:1-bookworm AS build
+WORKDIR /src
+COPY . .
+COPY --from=web /src/web/dist ./web/dist
+ENV ARR_WEB_DIST=/src/web/dist
+RUN cargo build --release -p arr-daemon
+
+FROM debian:bookworm-slim
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ffmpeg ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+COPY --from=build /src/target/release/arr /usr/local/bin/arr
+ENV ARR_BIND_ADDR=0.0.0.0:7878 \
+    ARR_DATABASE_PATH=/data/arr.db
+VOLUME /data
+EXPOSE 7878
+ENTRYPOINT ["arr"]