how to push log-emitter application in cloud foundry

• Enable and Disable the diego_docker Feature Flag The diego_docker feature flag governs whether a CF deployment supports Docker containers.

  To enable Docker support, run:

  cf enable-feature-flag diego_docker

  To disable Docker support, run:

  cf disable-feature-flag diego_docker

• Then in first step we should build this docker image

  
    FROM golang:1.10
    
    ENV CGO_ENABLED=0 \
    GOOS=linux \
    GOARCH=amd64
    
    # Set the Current Working Directory inside the container
    WORKDIR $GOPATH/src/logemitter
    
    # Copy everything from the current directory to the PWD(Present Working Directory) inside the container
    COPY . .
    
    # Download all the dependencies
    RUN go get -d -v ./...
    
    # Install the package
    RUN go install -v ./...
    
    # This container exposes port 8080 to the outside world
    EXPOSE 8080
    
    # Run the executable
    CMD ["logemitter"]
    

• For building docker image docker image you should run command like this

  docker build -t hmanukyan/logemitter:1.2 . 

  • hmanukyan is docker hub id (should get from docker-hub account username)
  • logemitter is repo name (could be any name)
  • 1.3 is image name OR tag name (could be any name)

• In the next step, you mast push docker in your account

  Important Notes,
  It is mandatory to push, cf not get the image from local docker repository

  docker image push hmanukyan/logemitter:1.2

• finally we can push the app in cloud foundry

  cf push logemitter --docker-image hmanukyan/logemitter:1.2  \
             --no-route --no-start --health-check-type process 
  

• If you interesting how to run docker image in locally then you can look this example

  docker container run -d --name APPLICATION_NAME hmanukyan/logemitter:1.2

  • You can see container with this docker ps command and with flag -a you can see all containers which is not successfully run docker ps -a

Notes,
for running application which is running in some port you need add -p 8000:8080

docker container run -d --name APPLICATION_NAME -p 8000:8080 hmanukyan/logemitter:1.2