build: add Dockerfile and compose for dev

.dockerignore

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+*
+!package*.json
+!dist

Dockerfile

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+FROM node:16-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm ci --prod
+
+COPY ./dist ./dist
+
+USER node
+
+EXPOSE 8080
+
+ENTRYPOINT ["npm", "run", "start:prod"]

docker-compose.yml

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+version: "3.8"
+
+services:
+  excalidraw: 
+    image: kiliandeca/excalidraw
+    healthcheck:
+      disable: true
+    ports:
+      - "80:80"
+    environment:
+      BACKEND_V2_GET_URL: http://localhost:8080/api/v2/
+      BACKEND_V2_POST_URL: http://localhost:8080/api/v2/
+      SOCKET_SERVER_URL: http://localhost:5000/
+
+  excalidraw-storage-backend:
+    build: .
+    ports:
+      - "8080:8080"
+
+  excalidraw-room:
+    image: excalidraw/excalidraw-room
+    ports:
+      - "5000:80"