Fix Google Cloud Shell launch (#2557)

cloudshell-tutorial.md

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+# Maigret
+
+<div align="center">
+  <img src="https://raw.githubusercontent.com/soxoj/maigret/main/static/maigret.png" height="220" alt="Maigret logo"/>
+</div>
+
+**Maigret** collects a dossier on a person **by username only**, checking for accounts on a huge number of sites and gathering all the available information from web pages. No API keys required.
+
+## Installation
+
+Google Cloud Shell does not ship with all the system libraries Maigret needs (`libcairo2-dev`, `pkg-config`). The helper script below installs them and then builds Maigret from the cloned source.
+
+Copy the command and run it in the Cloud Shell terminal:
+
+```bash
+./utils/cloudshell_install.sh
+```
+
+When the script finishes, verify the install:
+
+```bash
+maigret --version
+```
+
+## Usage examples
+
+Run a basic search for a username. By default Maigret checks the **500 highest-ranked sites by traffic** — pass `-a` to scan the full 3,000+ database.
+
+```bash
+maigret soxoj
+```
+
+Search several usernames at once:
+
+```bash
+maigret user1 user2 user3
+```
+
+Narrow the run to sites related to cryptocurrency via the `crypto` tag (you can also use country tags):
+
+```bash
+maigret vitalik.eth --tags crypto
+```
+
+Generate reports in HTML, PDF, and XMind 8 formats:
+
+```bash
+maigret soxoj --html
+maigret soxoj --pdf
+maigret soxoj --xmind
+```
+
+Download a generated report from Cloud Shell to your local machine:
+
+```bash
+cloudshell download reports/report_soxoj.pdf
+```
+
+Tune reliability on flaky networks — raise the timeout and retry failed checks:
+
+```bash
+maigret soxoj --timeout 60 --retries 2
+```
+
+For the full list of options see `maigret --help` or the [CLI documentation](https://maigret.readthedocs.io/en/latest/command-line-options.html).
+
+## Further reading
+
+Full project documentation: [maigret.readthedocs.io](https://maigret.readthedocs.io/)