adding dockerfiles

goServer/Dockerfile

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+FROM golang:latest
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+
+RUN go mod download
+
+COPY . .
+
+RUN go build -o main .
+
+EXPOSE 8080
+
+CMD ["./main"]

nodeServer/Dockerfile

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+FROM node:10
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies
+# A wildcard is used to ensure both package.json AND package-lock.json are copied
+# where available (npm@5+)
+COPY package*.json ./
+
+RUN npm install
+# If you are building your code for production
+# RUN npm ci --only=production
+
+# Bundle app source
+COPY . .
+
+EXPOSE 8080
+CMD [ "node", "server.js" ]

phpServer/Dockerfile

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+FROM nimmis/apache-php5
+
+COPY 000-default.conf /etc/apache2/sites-available/000-default.conf
+
+EXPOSE 80
+EXPOSE 443
+
+CMD ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]

pythonServer/Dockerfile

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+FROM python:3
+
+ADD server.py /
+
+CMD [ "python", "./my_script.py" ]