Complete Docker compose deployment setup

- Add an API container entrypoint that waits for PostgreSQL, runs Prisma migrations, seeds demo data, and then starts NestJS.

- Keep Prisma CLI and seed dependencies available in the API runtime image and copy seed source dependencies into the container.

- Add Docker Compose healthchecks and health-based startup ordering for PostgreSQL, API, and Nginx web services.

- Add Docker initialization environment switches for migrations, seed, and startup retries.

- Add a dedicated Docker deployment guide covering services, ports, initialization, HTTPS, production variables, backup, restore, and troubleshooting.

- Update README, AGENTS, installation, deployment, progress, and environment example docs for the Dockerized workflow.

Dockerfile.server

@@ -12,10 +12,13 @@ FROM node:20-alpine
 WORKDIR /app
 ENV NODE_ENV=production
 COPY package*.json ./
-RUN npm ci --omit=dev
+RUN npm ci
 COPY --from=builder /app/server/dist ./server/dist
+COPY --from=builder /app/server/src ./server/src
 COPY --from=builder /app/server/prisma ./server/prisma
 COPY --from=builder /app/prisma.config.ts ./prisma.config.ts
 COPY --from=builder /app/node_modules/.prisma ./node_modules/.prisma
+COPY scripts/docker-api-entrypoint.sh ./scripts/docker-api-entrypoint.sh
+RUN chmod +x ./scripts/docker-api-entrypoint.sh
 EXPOSE 3100
-CMD ["node", "server/dist/main.js"]
+CMD ["./scripts/docker-api-entrypoint.sh"]