task3 deployment

task3-backend/Dockerfile

@@ -0,0 +1,30 @@
+FROM alpine as builder
+
+ENV GOPATH /root/go
+ENV PATH ${GOPATH}/bin:${PATH}
+
+RUN mkdir -p /app
+WORKDIR /app
+
+RUN apk add --no-cache go git curl gcc g++ make
+
+COPY . .
+RUN go build -o task3 github.com/mainnika/a-quest/task3-backend
+
+FROM alpine
+
+ENV GOPATH /root/go
+ENV PATH ${GOPATH}/bin:${PATH}
+
+RUN mkdir -p /app /app/postbox
+WORKDIR /app
+
+COPY --from=builder /app/task3 .
+COPY --from=builder /app/task3-backend/config config
+
+EXPOSE 8081
+EXPOSE 31337
+
+VOLUME /app/postbox
+
+CMD ["/app/task3"]