Hello, I have three servers and I ran the following command on the manager node: # docker swarm init --advertise-addr 172.20.2.53 I ran the following command on the other two nodes: # docker swarm join --token SWMTKN-1-0rmswotsbvzaybcujrveigtr7ln5fcywsjtdn02gwdykpt468m-8skbceyft79pho1gz6xh74gx6 …

To deploy a compose file to Swarm, you need to run docker swarm deploy. This only works on manager nodes, so compose file is needed on manager. Swarm deploy will not build images from Dockerfile, so you need to create the images up front and push them to a repository, then reference by image name. …

build: is not available for docker swarm deploy, you can only use image:. So you need to build and push to a registry (to be downloaded later) via a separate process. Search Internet for “docker build push” to find a tutorial. You can run your own registry or use (paid) offering. When using your o…

Hi, Thanks again. So I need a DockerHub account. It’s like turning my website into a docker image. Is it correct? I use GitLab Runner. So whenever a change is made to the website, this image needs to be rebuilt and uploaded to DockerHub. I think it is a little unreasonable. Is there another way …

Hello, Any idea about it? Thanks.

You need a Docker image registry for hosting the images, so all nodes can pull from it. You can use Docker Hub, Github container registry, other providers or run your own .

Hi, Thanks again. Isn’t it time consuming to push and pull images?

To run an image, you need to pull it anyway. Using a build section in compose is even building the image first, which will pull base images and run the Dockerfile commands, which should usually take longer. It is recommended to use small images anyway, which will speed up the process. Most base im…

How to use docker compose with docker swarm?

Docker Engine Swarm

hack3rcon (Hack3rcon) May 21, 2024, 10:32am 3

Hello,
Thank you so much for your reply.
You said:

Swarm deploy will not build images from Dockerfile, so you need to create the images up front and push them to a repository, then reference by image name.

What do you mean by create the images up front and push them to a repository?

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How to use docker compose with docker swarm?

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