hi, in order to build another app from the simple HTML page in the example - https://www.pulumi.com/docs/tutorials/aws/ecs-fargate/ is it enough to change the app folder content (and Dockerfile) or should I also change anything else? especially this line-

image: awsx.ecs.Image.fromPath("nginx", "./app"),

what is the meaning of the "nginx"

Should be image name: https://www.pulumi.com/docs/reference/pkg/nodejs/pulumi/awsx/ecs/#Image-fromPath

so it is only the name? and it should be enough? from the documentation I understand that it push it to repository (where?) but does it use it also? because I made changes in the Dockerfile and there is no impact.. thanks!