Aggiunto build system docker

Dockerfile

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+#FROM node:lts-alpine AS mm-builder
+FROM node:10-slim AS mm-builder
+
+
+# Args
+ARG BASEDIR=/opt
+ARG MM=multiparty-meeting
+ARG NODE_ENV=production
+ARG SERVER_DEBUG=''
+ARG REACT_APP_DEBUG=''
+
+
+#RUN apk add --no-cache git bash
+RUN apt-get update;apt-get install -y git bash
+
+WORKDIR ${BASEDIR}
+COPY server ${BASEDIR}/${MM}/server
+
+#install server dep
+WORKDIR ${BASEDIR}/${MM}/server
+
+#RUN apk add --no-cache git build-base python linux-headers
+RUN apt-get install -y git build-essential python
+
+RUN npm install
+
+
+COPY app ${BASEDIR}/${MM}/app
+#install app dep
+WORKDIR ${BASEDIR}/${MM}/app
+RUN npm install
+
+# set app in producion mode/minified/.
+ENV NODE_ENV ${NODE_ENV}
+
+# Workaround for the next yarn run build => rm -rf public dir even if it does not exists.
+# TODO: Fix it smarter
+RUN mkdir -p ${BASEDIR}/${MM}/server/public
+
+ENV REACT_APP_DEBUG=${REACT_APP_DEBUG}
+
+# package web app
+RUN npm run build
+
+
+#FROM node:lts-alpine
+FROM node:10-slim
+
+# Args
+ARG BASEDIR=/opt
+ARG MM=multiparty-meeting
+ARG NODE_ENV=production
+ARG SERVER_DEBUG=''
+
+WORKDIR ${BASEDIR}
+
+COPY --from=mm-builder ${BASEDIR}/${MM}/server ${BASEDIR}/${MM}/server
+
+
+
+# Web PORTS
+EXPOSE 80 443 
+EXPOSE 40000-49999/udp
+
+
+## run server 
+ENV DEBUG ${SERVER_DEBUG}
+
+COPY docker/docker-entrypoint.sh /
+ENTRYPOINT ["/docker-entrypoint.sh"]