Before this patch, `docker stack deploy` would not validate the image
reference on the client side, depending on the daemon to return an error,
which was not always easy to interpret;
docker stack deploy -c docker-compose.yaml mystack
Creating service mystack_myservice
failed to create service mystack_myservice: Error response from daemon: rpc error: code = InvalidArgument desc = ContainerSpec: image reference must be provided
IMAGE_NAME=FOOBAR docker stack deploy -c docker-compose.yaml mystack
Creating service mystack_myservice
failed to create service mystack_myservice: Error response from daemon: rpc error: code = InvalidArgument desc = ContainerSpec: "FOOBAR" is not a valid repository/tag
With this patch, the CLI validates the image-reference for each service,
producing an error if the reference is empty or invalid.
docker stack config -c docker-compose.yaml
invalid service myservice: no image specified
IMAGE_NAME=FOOBAR ~/Projects/cli/build/docker stack deploy -c docker-compose.yaml mystack
invalid image reference for service myservice: invalid reference format: repository name (library/FOOBAR) must be lowercase
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
bcb36e26cb