Retarget deployment from Plesk to Dokploy (Docker Compose)

Dockerfile

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+# syntax=docker/dockerfile:1
+# Single image used by both the web and worker services (see docker-compose.yml).
+# Includes ffmpeg (audio stitching) + the full node_modules so the worker can run
+# via tsx and `prisma migrate deploy` can run on web startup.
+
+FROM node:20-bookworm-slim AS base
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends ffmpeg openssl ca-certificates \
+  && rm -rf /var/lib/apt/lists/*
+WORKDIR /app
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# ---- dependencies ----
+FROM base AS deps
+COPY package.json package-lock.json ./
+RUN npm ci
+
+# ---- build ----
+FROM base AS build
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+# NEXT_PUBLIC_* are inlined into the client bundle at build time, so they must be
+# provided as build args (Dokploy passes them from the env — see docker-compose.yml).
+ARG NEXT_PUBLIC_APP_URL
+ARG NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
+ENV NEXT_PUBLIC_APP_URL=$NEXT_PUBLIC_APP_URL
+ENV NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY=$NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
+# A throwaway BETTER_AUTH_SECRET, scoped to THIS command only (not a persisted ENV
+# layer), satisfies the prod-secret guard in lib/auth/auth.ts during `next build`.
+# Dokploy injects the real secret at run time; it's never baked into the bundle.
+RUN BETTER_AUTH_SECRET=build-time-placeholder npm run build
+
+# ---- runtime ----
+FROM base AS runner
+ENV NODE_ENV=production
+ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
+ENV STORAGE_DIR=/app/storage
+# Copy the whole built app (node_modules incl. tsx + prisma CLI, .next, source).
+COPY --from=build /app ./
+RUN mkdir -p /app/storage/mp3 /app/storage/art /app/storage/exports
+EXPOSE 3000
+# Default = web; the worker service overrides this command in docker-compose.yml.
+CMD ["npm", "run", "start"]