Fix docker integration code to compile and run.

[alistairmatthews]

Previous to this PR, the article suggested that the method is called like this:

var cache = builder.AddRedis("cache")
                   .PublishAsDockerComposeService();

This won't compile or run because you need to pass an action:

var apiService = builder.AddProject<Projects.AspireDockerExp_ApiService>("apiservice")
    .PublishAsDockerComposeService((resource, service) => 
      { 
        service.Name = "redis"; 
      });

Plus a couple of other fixes.

[Copilot]

Pull request overview

This PR fixes critical compilation issues in the Docker integration documentation by correcting the PublishAsDockerComposeService API usage and fixing the AddParameterFromConfiguration API signature. The previous documentation showed these methods being called without required parameters, which would prevent the code from compiling.

Changes:

• Updated PublishAsDockerComposeService calls to include the required action callback (resource, service) => { } throughout all code examples
• Fixed AddParameterFromConfiguration calls to include both the required name and configurationKey parameters
• Added pragma warning directives to suppress experimental API warnings for container image push options and container registry APIs

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[IEvangelist]

Had to fix those styles, they were triggering me. 😬