Add worker Docker image

.dockerignore

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+node_modules
+dist
+.env
+.git

Dockerfile

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+FROM node:22-alpine AS deps
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+
+FROM node:22-alpine AS build
+WORKDIR /app
+ENV DATABASE_URL="postgresql://mapflow:mapflow@localhost:5432/mapflow"
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run prisma:generate
+RUN npm run build
+
+FROM node:22-alpine AS runner
+WORKDIR /app
+ENV NODE_ENV=production
+COPY package*.json ./
+RUN npm ci --omit=dev
+COPY --from=build /app/dist ./dist
+COPY --from=build /app/src/generated ./src/generated
+COPY --from=build /app/prisma ./prisma
+COPY --from=build /app/prisma.config.ts ./prisma.config.ts
+CMD ["node", "dist/hatchet/worker.js"]