feat: remove postgres & use a single docker container

Dockerfile

@@ -0,0 +1,38 @@
+FROM node:18-alpine AS frontend-builder
+WORKDIR /opt/app
+COPY frontend/package.json frontend/package-lock.json ./
+RUN npm ci
+COPY ./frontend .
+RUN npm run build
+
+FROM node:18 AS backend-builder
+WORKDIR /opt/app
+COPY backend/package.json backend/package-lock.json ./
+RUN npm ci
+COPY ./backend .
+RUN npx prisma generate
+RUN npm run build
+
+
+
+
+
+FROM node:18 AS runner
+WORKDIR /opt/app/frontend
+ENV NODE_ENV=production
+COPY --from=frontend-builder /opt/app/next.config.js .
+COPY --from=frontend-builder /opt/app/public ./public
+COPY --from=frontend-builder /opt/app/.next ./.next
+COPY --from=frontend-builder /opt/app/node_modules ./node_modules
+
+WORKDIR /opt/app/backend
+COPY --from=backend-builder /opt/app/node_modules ./node_modules
+COPY --from=backend-builder /opt/app/dist ./dist
+COPY --from=backend-builder /opt/app/prisma ./prisma
+COPY --from=backend-builder /opt/app/package.json ./
+WORKDIR /opt/app
+
+RUN npm i -g dotenv-cli
+
+EXPOSE 3000
+CMD cd frontend && dotenv -e .env.development node_modules/.bin/next start & cd backend && npm run prod