chore: Pin the README example, test the PR script and add curl timeouts

README.md

@@ -63,7 +63,7 @@ The plugin uses the env0 API to fetch the output values from another environment
 
 The plugin downloads a prebuilt binary for the agent architecture (`amd64` or `arm64`) from the [GitHub releases](https://github.com/env0/env0-import-variable-plugin/releases) and verifies its SHA-256 checksum. It does not install Go. If the download fails, the plugin installs Go and builds the binary from source.
 
-Use `use: https://github.com/env0/env0-import-variable-plugin` in your custom flow to get this behavior. If you copied the old plugin script into your `env0.yaml`, replace it with `use:`.
+Use `use: https://github.com/env0/env0-import-variable-plugin@<version>` in your custom flow to get this behavior, with the latest version from the [releases](https://github.com/env0/env0-import-variable-plugin/releases). If you copied the old plugin script into your `env0.yaml`, replace it with `use:`.
 
 ## Example Usage
 
@@ -76,7 +76,7 @@ deploy:
     terraformPlan:
       before:
         - name: Import Variables # The name that will be presented in the UI for this step
-          use: https://github.com/env0/env0-import-variable-plugin
+          use: https://github.com/env0/env0-import-variable-plugin@0.5.1
           inputs: {}
 
 ```

env0.plugin.yaml

@@ -37,9 +37,9 @@ run:
       arch="$(plugin_arch)" || return 1
       binary="import-variable-plugin_linux_$arch"
       download_dir="$(mktemp -d)"
-      curl -fsSL --retry 3 -o "$download_dir/$binary" "$(release_url "$binary")" &&
-        curl -fsSL --retry 3 -o "$download_dir/importVariables.sh" "$(release_url importVariables.sh)" &&
-        curl -fsSL --retry 3 -o "$download_dir/checksums.txt" "$(release_url checksums.txt)" &&
+      curl -fsSL --retry 3 --connect-timeout 10 --max-time 120 -o "$download_dir/$binary" "$(release_url "$binary")" &&
+        curl -fsSL --retry 3 --connect-timeout 10 --max-time 120 -o "$download_dir/importVariables.sh" "$(release_url importVariables.sh)" &&
+        curl -fsSL --retry 3 --connect-timeout 10 --max-time 120 -o "$download_dir/checksums.txt" "$(release_url checksums.txt)" &&
         verify_checksum "$download_dir" "$binary" &&
         verify_checksum "$download_dir" importVariables.sh &&
         chmod +x "$download_dir/$binary" "$download_dir/importVariables.sh" &&

test/env0.yaml

@@ -5,7 +5,8 @@ deploy:
     setupVariables:
       after:
         - name: Import Variables
-          use: https://github.com/env0/env0-import-variable-plugin
+          run: |
+            sed -n '/^  exec: |$/,$p' "$ENV0_ROOT_DIR/env0.plugin.yaml" | tail -n +2 | sed 's/^    //' | bash
     terraformOutput:
       after:
         - name: Test Outputs