Add docker files

uno/client/Dockerfile

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+FROM nginx
+
+COPY . /usr/share/nginx/html

uno/docker-compose.yml

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+version: '3'
+services:
+    client:
+        build: client
+        ports:
+            - "8000:80"
+    websocket:
+        build: server
+        ports:
+            - "8001:8000"

uno/server/Dockerfile

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+FROM golang
+
+WORKDIR /app/server
+COPY . .
+
+RUN go mod download
+RUN go build -o server
+ENTRYPOINT ["./server"]
+
+EXPOSE 8000