Dockerfile each folder

goServer/Dockerfile

@@ -0,0 +1,10 @@
+FROM golang:1.13.1-alpine
+WORKDIR /go/src/app
+COPY . .
+RUN go build -o server server.go
+
+FROM alpine
+WORKDIR /app
+COPY --from=0 /go/src/app/server .
+EXPOSE 8080
+CMD ["./server"]

nodeServer/Dockerfile

@@ -0,0 +1,6 @@
+FROM node:12.11.1-alpine
+WORKDIR /app
+COPY . .
+RUN npm install
+EXPOSE 8080
+CMD ["node", "server.js"]

phpServer/Dockerfile

@@ -0,0 +1,4 @@
+FROM php:7.2-cli
+WORKDIR /app
+COPY . .
+CMD ["php","-S", "0.0.0.0:8080"]

pythonServer/Dockerfile

@@ -0,0 +1,5 @@
+FROM python:3.6-alpine
+WORKDIR /app
+COPY . . 
+EXPOSE 8080
+CMD ["python3.6", "server.py"]

pythonServer/server.py

@@ -13,7 +13,7 @@ def do_GET(self):
         self.setResponseHeaders()
         self.wfile.write(self.createHTMLMessage("Welcome to python server"))
 
-def runServer(serverClass = HTTPServer, handlerClass = RequestHandler, serverAddress="localhost", serverPort=8080):
+def runServer(serverClass = HTTPServer, handlerClass = RequestHandler, serverAddress="0.0.0.0", serverPort=8080):
     mainAddress = (serverAddress, serverPort)
     mainServer = serverClass(mainAddress, handlerClass)
     print(f"Starting server at {serverAddress}:{serverPort}")