Docker swarm: 'build' configuration in docker compose file ignored during stack deployment

Question

We have created a docker compose file with multiple services. The images for these services are built in runtime using \'build\' configuration option. The corresponding Dockerfi

Answer 1

Short answer is, you can not use the build command with docker stack deploy.

From the docs:

Note: The docker stack command build option is ignored when deploying a stack in swarm mode with a (version 3) Compose file. The docker stack command accepts only pre-built images.

An alternative is to build the docker image before deploying the your swarm cluster.

Use the docker build command to create the docker image; Push the created image to a (public or private) docker registry; and reference it in your docker compose file.