Docker Swarm- Build image only when stack deployed from manager node

Question

I'm trying to deploy a stack of services in a swarm in a local machine. i want the image to be built only when i deploy or run the stack from manager node.

Is there a way to acheive this?

Answer 1

Use docker build to build the image. The thing with docker swarm is that it doesn't work with tags instead it uses the image id while executing a stack deploy.

docker build -t imagename --no-cache .

You can use this image on your Docker Compose file like the following:

version: '3'
services:
  example-service:
    image: imagename:latest