Housekeeping (#8)

* Rename the provider to dockerbuild.
* Add Makefile targets required by CI.
* Add per-language test targets compatible with CI.
* Fix broken example yaml.
* Add gitignore exclusions to fix SDK generation in CI.
* Fix lint errors.
* Vendor pulumi CLI via `tools.go` instead of `.pulumi`.
* Consolidate `go.mod`s into one file, with a minimal `go.mod` for the
Go SDK.
* Add codecov.

sdk/dotnet/Random.cs

@@ -7,9 +7,9 @@ using System.Collections.Immutable;
 using System.Threading.Tasks;
 using Pulumi.Serialization;
 
-namespace Pulumi.DockerNative
+namespace Pulumi.Dockerbuild
 {
-    [DockerNativeResourceType("docker-native:index:Random")]
+    [DockerbuildResourceType("dockerbuild:index:Random")]
     public partial class Random : global::Pulumi.CustomResource
     {
         [Output("length")]
@@ -27,12 +27,12 @@ namespace Pulumi.DockerNative
         /// <param name="args">The arguments used to populate this resource's properties</param>
         /// <param name="options">A bag of options that control this resource's behavior</param>
         public Random(string name, RandomArgs args, CustomResourceOptions? options = null)
-            : base("docker-native:index:Random", name, args ?? new RandomArgs(), MakeResourceOptions(options, ""))
+            : base("dockerbuild:index:Random", name, args ?? new RandomArgs(), MakeResourceOptions(options, ""))
         {
         }
 
         private Random(string name, Input<string> id, CustomResourceOptions? options = null)
-            : base("docker-native:index:Random", name, null, MakeResourceOptions(options, id))
+            : base("dockerbuild:index:Random", name, null, MakeResourceOptions(options, id))
         {
         }
 
@@ -41,7 +41,7 @@ namespace Pulumi.DockerNative
             var defaultOptions = new CustomResourceOptions
             {
                 Version = Utilities.Version,
-                PluginDownloadURL = "github.com/pulumi/pulumi-docker-native",
+                PluginDownloadURL = "github.com/pulumi/pulumi-dockerbuild",
             };
             var merged = CustomResourceOptions.Merge(defaultOptions, options);
             // Override the ID if one was specified for consistency with other language SDKs.