part 3 code

c#/dockerfile

@@ -1 +1,22 @@
-FROM mcr.microsoft.com/dotnet/core/sdk:2.2
+FROM mcr.microsoft.com/dotnet/core/sdk:2.2-stretch as dev
+
+RUN mkdir /work/
+WORKDIR /work/
+
+COPY ./src/work.csproj /work/work.csproj
+RUN dotnet restore
+
+COPY ./src/ /work/
+RUN mkdir /out/
+RUN dotnet publish --no-restore --output /out/ --configuration Release
+
+
+###########START NEW IMAGE###########################################
+
+FROM mcr.microsoft.com/dotnet/core/aspnet:2.2-stretch-slim as prod
+
+RUN mkdir /app/
+WORKDIR /app/
+COPY --from=dev /out/ /app/
+RUN chmod +x /app/ 
+CMD dotnet work.dll

c#/src/Properties/launchSettings.json

@@ -3,8 +3,8 @@
     "windowsAuthentication": false, 
     "anonymousAuthentication": true, 
     "iisExpress": {
-      "applicationUrl": "http://localhost:20571",
-      "sslPort": 44382
+      "applicationUrl": "http://localhost:63846",
+      "sslPort": 44303
     }
   },
   "profiles": {

c#/src/work.csproj

@@ -3,9 +3,11 @@
   <PropertyGroup>
     <TargetFramework>netcoreapp2.2</TargetFramework>
     <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
+    <RuntimeIdentifiers>linux-x64</RuntimeIdentifiers>
   </PropertyGroup>
 
 
+
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.App"/>
     <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.2.0" PrivateAssets="All" />

docker-compose.yaml

@@ -1,49 +1,57 @@
-version: "3"
+version: "3.4"
 services:
   csharp: #docker run -it -v ${PWD}:/work -w /work -p 5000:5000 aimvector/csharp:1.0.0 /bin/sh
     container_name: csharp
     image: aimvector/csharp:1.0.0
-    build: ./c#
-    working_dir: /work
-    entrypoint: /bin/sh
-    stdin_open: true
-    tty: true
+    build:
+      context: ./c#
+      target: prod
+    #working_dir: /work      #comment out for build.target:prod
+    #entrypoint: /bin/sh     #comment out for build.target:prod
+    #stdin_open: true        #comment out for build.target:prod
+    #tty: true               #comment out for build.target:prod
     volumes:
-    - ./c#/src/:/work
+    - ./c#/src/:/work/
     ports:
       - 5000:5000
   golang: #docker run -it -v ${PWD}:/work -w /work -p 5001:5000 aimvector/golang:1.0.0 /bin/sh
     container_name: golang
     image: aimvector/golang:1.0.0
-    build: ./golang
-    working_dir: /work
-    entrypoint: /bin/sh
-    stdin_open: true
-    tty: true
+    build: 
+      context: ./golang
+      target: prod
+    #working_dir: /work      #comment out for build.target:prod
+    #entrypoint: /bin/sh     #comment out for build.target:prod
+    #stdin_open: true        #comment out for build.target:prod
+    #tty: true               #comment out for build.target:prod
     volumes:
     - ./golang/src/:/work
     ports:
       - 5001:5000
   nodejs: #docker run -it -v ${PWD}:/work -w /work -p 5002:5000 aimvector/nodejs:1.0.0 /bin/sh
     container_name: nodejs
     image: aimvector/nodejs:1.0.0
-    build: ./nodejs
-    working_dir: /work
-    entrypoint: /bin/sh
-    stdin_open: true
-    tty: true
+    build:
+      context: ./nodejs
+      target: prod
+    #working_dir: /work      #comment out for build.target:prod
+    #entrypoint: /bin/sh     #comment out for build.target:prod
+    #stdin_open: true        #comment out for build.target:prod
+    #tty: true               #comment out for build.target:prod
     volumes:
     - ./nodejs/src/:/work
     ports:
       - 5002:5000
   python: #docker run -it -v ${PWD}:/work -w /work -p 5003:5000 aimvector/python:1.0.0 /bin/sh
     container_name: python
     image: aimvector/python:1.0.0
-    build: ./python
-    working_dir: /work
-    entrypoint: /bin/sh
-    stdin_open: true
-    tty: true
+    build:
+      context: ./python
+      target: prod
+    #working_dir: /work      #comment out for build.target:prod
+    #entrypoint: /bin/sh     #comment out for build.target:prod
+    #stdin_open: true        #comment out for build.target:prod
+    #tty: true               #comment out for build.target:prod
     volumes:
     - ./python/src/:/work
     ports:

golang/dockerfile

@@ -1,9 +1,18 @@
-FROM golang:1.12.5-alpine3.9 as builder
+FROM golang:1.12.5-alpine3.9 as dev
 
 # installing git
 RUN apk update && apk upgrade && \
     apk add --no-cache git
 
 RUN go get github.com/sirupsen/logrus
 RUN go get github.com/buaazp/fasthttprouter
-RUN go get github.com/valyala/fasthttp
+RUN go get github.com/valyala/fasthttp
+
+WORKDIR /work
+COPY ./src /work/
+RUN go build -o app
+###########START NEW IMAGE###################
+
+FROM alpine:3.9 as prod
+COPY --from=dev /work/app /
+CMD ./app

nodejs/dockerfile

@@ -1 +1,16 @@
-FROM node:12.4.0-alpine
+FROM node:12.4.0-alpine as dev
+
+RUN mkdir /work/
+WORKDIR /work/
+
+COPY ./src/package.json /work/package.json
+RUN npm install
+
+COPY ./src/ /work/
+
+
+###########START NEW IMAGE###################
+
+FROM dev as prod
+
+CMD node .

python/dockerfile

@@ -1,3 +1,21 @@
-FROM python:3.7.3-alpine3.9
+FROM python:3.7.3-alpine3.9 as dev
 
-RUN pip install flask
+RUN mkdir /work/
+WORKDIR /work/
+
+COPY ./src/requirements.txt /work/requirements.txt
+RUN pip install -r requirements.txt
+
+COPY ./src/ /work/
+
+###########START NEW IMAGE###################
+
+FROM python:3.7.3-alpine3.9 as prod
+
+RUN mkdir /app/
+WORKDIR /app/
+
+COPY --from=dev /work/ /app/
+RUN pip install -r requirements.txt
+ENV FLASK_APP=server.py
+CMD flask run -h 0.0.0 -p 5000

python/src/requirements.txt

@@ -0,0 +1 @@
+Flask == 1.0.3