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.

.github/workflows/run-acceptance-tests.yml

@@ -45,6 +45,7 @@ env:
   ARM_CLIENT_SECRET: ${{ secrets.ARM_CLIENT_SECRET }}
   AZURE_LOCATION: westus
   DIGITALOCEAN_TOKEN: ${{ secrets.DIGITALOCEAN_TOKEN }}
+  GOLANGCI_LINT_TIMEOUT: 10m
   GOOGLE_CI_SERVICE_ACCOUNT_EMAIL: pulumi-ci@pulumi-ci-gcp-provider.iam.gserviceaccount.com
   GOOGLE_CI_WORKLOAD_IDENTITY_POOL: pulumi-ci
   GOOGLE_CI_WORKLOAD_IDENTITY_PROVIDER: pulumi-ci
@@ -414,8 +415,8 @@ jobs:
       uses: golangci/golangci-lint-action@v4
       with:
         version: ${{ env.GOLANGCI_LINT_VERSION }}
-        args: -c ../../.golangci.yml --timeout ${{ env.GOLANGCI_LINT_TIMEOUT }}
-        working-directory: provider/pkg
+        args: -c ../.golangci.yml --timeout ${{ env.GOLANGCI_LINT_TIMEOUT }}
+        working-directory: provider
     name: lint
     if: github.event_name == 'repository_dispatch' ||
       github.event.pull_request.head.repo.full_name == github.repository