Initial provider implementation (#18)

This brings over the initial buildx prototype from pulumi/pulumi-docker
and fixes various build and release issues.

sdk/dotnet/Inputs/RegistryArgs.cs

@@ -0,0 +1,48 @@
+// *** WARNING: this file was generated by pulumi. ***
+// *** Do not edit by hand unless you're certain you know what you are doing! ***
+
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Threading.Tasks;
+using Pulumi.Serialization;
+
+namespace Pulumi.DockerBuild.Inputs
+{
+
+    public sealed class RegistryArgs : global::Pulumi.ResourceArgs
+    {
+        /// <summary>
+        /// The registry's address (e.g. "docker.io").
+        /// </summary>
+        [Input("address", required: true)]
+        public Input<string> Address { get; set; } = null!;
+
+        [Input("password")]
+        private Input<string>? _password;
+
+        /// <summary>
+        /// Password or token for the registry.
+        /// </summary>
+        public Input<string>? Password
+        {
+            get => _password;
+            set
+            {
+                var emptySecret = Output.CreateSecret(0);
+                _password = Output.Tuple<Input<string>?, int>(value, emptySecret).Apply(t => t.Item1);
+            }
+        }
+
+        /// <summary>
+        /// Username for the registry.
+        /// </summary>
+        [Input("username")]
+        public Input<string>? Username { get; set; }
+
+        public RegistryArgs()
+        {
+        }
+        public static new RegistryArgs Empty => new RegistryArgs();
+    }
+}