feat: add upgrade provider (#120)

.devcontainer/Dockerfile

@@ -9,3 +9,14 @@ RUN mkdir -p /root/pulumictl && cd /root/pulumictl/
 RUN wget https://github.com/pulumi/pulumictl/releases/download/v0.0.42/pulumictl-v0.0.42-linux-amd64.tar.gz -O /root/pulumictl/pulumictl-v0.0.42-linux-amd64.tar.gz
 RUN tar -xvf /root/pulumictl/pulumictl-v0.0.42-linux-amd64.tar.gz -C /root/pulumictl/
 ENV PATH="//root/pulumictl/:${PATH}"
+
+RUN apt install sudo -y
+
+RUN type -p curl >/dev/null || (sudo apt update && sudo apt install curl -y)
+RUN curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | sudo dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg
+RUN sudo chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg
+RUN echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null
+RUN sudo apt update
+RUN sudo apt install gh -y
+
+RUN go install github.com/pulumi/upgrade-provider@main

.upgrade-config.yml

@@ -0,0 +1,2 @@
+upstream-provider-name: terraform-provider-harbor
+allow-missing-docs: true