Refactor Docker Compose setup and clean up REST router

- Updated `docker-compose.yml` to use `.env` for environment variables and modified the `rest` service configuration for the Nessie integration.
- Temporarily disabled the `postgres` service by commenting it out.
- Removed unused imports in `post_datasets.rs` to enhance code readability and maintainability.

These changes streamline the development environment and improve code quality.

Dockerfile

@@ -0,0 +1,61 @@
+# Build stage for the API
+FROM lukemathwalker/cargo-chef AS api-builder
+WORKDIR /app/api
+COPY api/ .
+RUN cargo install diesel_cli --no-default-features --features postgres
+RUN cargo build --release --bin bi_api
+
+# Build stage for the web app
+FROM node:18 AS web-builder
+WORKDIR /app/web
+COPY web/ .
+RUN npm ci
+RUN npm run build
+RUN npm prune --production
+
+# Final stage
+FROM debian:bookworm-slim
+WORKDIR /app
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    curl \
+    postgresql-client \
+    libpq-dev \
+    nodejs \
+    npm \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy built artifacts
+COPY --from=api-builder /app/api/target/release/bi_api ./api/
+COPY --from=api-builder /usr/local/cargo/bin/diesel /usr/local/bin/diesel
+COPY --from=web-builder /app/web/.next ./web/.next
+COPY --from=web-builder /app/web/public ./web/public
+COPY --from=web-builder /app/web/package.json ./web/
+COPY --from=web-builder /app/web/node_modules ./web/node_modules
+COPY docker-compose.yml .
+COPY api/migrations ./migrations/
+COPY api/diesel.toml .
+
+# Copy entrypoint script
+COPY <<EOF /app/entrypoint.sh
+#!/bin/bash
+set -e
+
+until pg_isready -h db -p 5432; do
+  echo "Waiting for database to be ready..."
+  sleep 2
+done
+
+export DATABASE_URL="postgresql://\${POSTGRES_USER:-postgres}:\${POSTGRES_PASSWORD:-your-super-secret-password}@db:5432/\${POSTGRES_DB:-buster}"
+
+echo "Running diesel migrations..."
+diesel migration run
+
+echo "Starting services..."
+cd web && npm start & cd .. && docker-compose up
+EOF
+
+RUN chmod +x /app/entrypoint.sh
+ENTRYPOINT ["/app/entrypoint.sh"] 

docker-compose.yml

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+version: '3.8'
+
+services:
+  db:
+    image: supabase/postgres:15.1.0.117
+    restart: always
+    environment:
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-your-super-secret-password}
+      POSTGRES_USER: ${POSTGRES_USER:-postgres}
+      POSTGRES_DB: ${POSTGRES_DB:-buster}
+    volumes:
+      - db_data:/var/lib/postgresql/data
+      - ./migrations:/docker-entrypoint-initdb.d
+    ports:
+      - "5432:5432"
+
+  api:
+    build:
+      context: ./api
+      dockerfile: Dockerfile
+    ports:
+      - "3001:3001"
+    environment:
+      DATABASE_URL: postgresql://${POSTGRES_USER:-postgres}:${POSTGRES_PASSWORD:-your-super-secret-password}@db:5432/${POSTGRES_DB:-buster}
+    depends_on:
+      - db
+
+  web:
+    build:
+      context: ./web
+      dockerfile: Dockerfile
+    ports:
+      - "3000:3000"
+    environment:
+      API_URL: http://api:3001
+    depends_on:
+      - api
+
+volumes:
+  db_data: