WebService file to deploy and publish Sitecore items during release process. should be deleted at the end of release. - https://jeffdarchuk.com/2019/03/12/remotely-triggering-sitecore-operations-in-azure/

PublishManager.asmx

using System.Collections.Generic;
using System.Linq;
using System.Web.Services;
using Sitecore.Jobs;
 
 
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
public class PublishManager : System.Web.Services.WebService
{
    [WebMethod(Description = "Publishes all content")]
    public bool PublishAll(string token)
    {
        if (string.IsNullOrEmpty(token))
            return false;
        if (token != "[TOKEN]")
            return false;
        var db = Sitecore.Configuration.Factory.GetDatabase("master");
        var item = db.GetRootItem();
        var publishingTargets = Sitecore.Publishing.PublishManager.GetPublishingTargets(item.Database);
 
        foreach (var publishingTarget in publishingTargets)
        {
            var targetDatabaseName = publishingTarget["Target database"];
            if (string.IsNullOrEmpty(targetDatabaseName))
                continue;
 
            var targetDatabase = Sitecore.Configuration.Factory.GetDatabase(targetDatabaseName);
            if (targetDatabase == null)
                continue;
 
            var publishOptions = new Sitecore.Publishing.PublishOptions(
                item.Database,
                targetDatabase,
                Sitecore.Publishing.PublishMode.Smart,
                item.Language,
                System.DateTime.Now);
 
            var publisher = new Sitecore.Publishing.Publisher(publishOptions);
            publisher.Options.RootItem = item;
            publisher.Options.Deep = true;
            publisher.PublishAsync();
        }
        return true;
    }
    [WebMethod(Description = "Checks publish status")]
    public string[] PublishStatus()
    {
        return JobManager.GetJobs().Where(x => !x.IsDone && x.Name.StartsWith("Publish")).Select(x =>
            x.Status.Processed + " -> " + x.Name).ToArray();
    }
}