Fix Docker image

Author: ButterscotchV

bot.Dockerfile

@@ -1,10 +1,21 @@
 FROM node:24-slim AS base
 
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
 COPY ./bingus-bot/ /app/bingus-bot/
 COPY ./package*.json /app/
+COPY ./pnpm*.yaml /app/
 WORKDIR /app
 
-RUN pnpm ci
+FROM base AS prod-deps
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
+
+FROM base AS build
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
 RUN pnpm run -w bingus-bot build
 
+FROM base
+COPY --from=prod-deps /app/node_modules /app/node_modules
+COPY --from=build /app/dist /app/dist
 CMD [ "pnpm", "-w", "bingus-bot", "start" ]