diff --git a/examples/github-actions/installer-smoke.yml b/examples/github-actions/installer-smoke.yml
index 0a852af..329f8fa 100644
--- a/examples/github-actions/installer-smoke.yml
+++ b/examples/github-actions/installer-smoke.yml
@@ -37,11 +37,12 @@ jobs:
         uses: Mresyzz/opsscript-gate@v0.9.4
         with:
           script-path: installer-smoke.sh
-          shell: bash
+          shell: auto
           matrix: debian:12-slim,ubuntu:22.04,ubuntu:24.04,alpine:3.20
           network: bridge
           packages: bash,curl,ca-certificates,tar
           timeout: '120'
+          format: json
           output: reports/installer-smoke.json
 
       - name: Save report, including failed installs
diff --git a/pyproject.toml b/pyproject.toml
index 2e8bd9a..c3cf144 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -73,6 +73,7 @@ Troubleshooting = "https://github.com/Mresyzz/opsscript-gate/blob/main/docs/comm
 test = [
     "pytest>=8.0.0",
     "markdown-it-py>=3.0.0",
+    "PyYAML>=6.0.0",
 ]
 
 [project.scripts]
diff --git a/tests/test_installer_example.py b/tests/test_installer_example.py
new file mode 100644
index 0000000..8a5be49
--- /dev/null
+++ b/tests/test_installer_example.py
@@ -0,0 +1,76 @@
+"""Exercise the downloadable workflow's inputs and generated script together."""
+
+import json
+from pathlib import Path
+import shutil
+import subprocess
+
+import pytest
+import yaml
+
+from opsscript_gate.cli import main
+
+
+@pytest.fixture
+def installer_example():
+    path = Path(__file__).resolve().parents[1] / "examples/github-actions/installer-smoke.yml"
+    workflow = yaml.safe_load(path.read_text(encoding="utf-8"))
+    steps = workflow["jobs"]["installer"]["steps"]
+    recipe = next(step["run"] for step in steps if step.get("name") == "Prepare installer and installation check")
+    inputs = next(step["with"] for step in steps if step.get("name") == "Install and verify in each distribution")
+    args = ["run", inputs["script-path"]]
+    for key, value in inputs.items():
+        if key != "script-path":
+            args.extend([f"--{key}", str(value)])
+    return recipe, args, inputs
+
+
+def test_downloadable_installer_inputs_are_accepted(installer_example, tmp_path, monkeypatch):
+    _, args, inputs = installer_example
+    monkeypatch.chdir(tmp_path)
+    Path(inputs["script-path"]).write_text("#!/bin/bash\nexit 0\n", encoding="utf-8")
+    # This follows the copied inputs through CLI validation, without Docker.
+    assert main(args + ["--dry-run"]) == 0
+
+
+def docker_available():
+    try:
+        import docker
+        client = docker.from_env()
+        try:
+            client.ping()
+        finally:
+            client.close()
+        return True
+    except Exception:
+        return False
+
+
+@pytest.mark.integration
+@pytest.mark.skipif(not docker_available() or not shutil.which("bash"), reason="Requires Docker and Bash")
+@pytest.mark.parametrize("installed", [True, False], ids=["working-binary", "false-success"])
+def test_downloadable_installer_runs_in_real_matrix(installer_example, tmp_path, monkeypatch, installed):
+    recipe, args, inputs = installer_example
+    monkeypatch.chdir(tmp_path)
+    installer = "#!/bin/bash\n"
+    if installed:
+        installer += (
+            'mkdir -p "$HOME/.local/bin"\n'
+            'printf \'#!/bin/sh\\n[ "$1" = "--version" ] || exit 9\\necho mytool-test\\n\' '
+            '> "$HOME/.local/bin/mytool"\n'
+            'chmod +x "$HOME/.local/bin/mytool"\n'
+        )
+    # Explicit exit 0 must not skip the example's installation postcondition.
+    installer += 'echo "Installation finished"\nexit 0\n'
+    Path("install.sh").write_text(installer, encoding="utf-8")
+    subprocess.run(["bash", "-e", "-c", recipe], check=True, timeout=10)
+    assert main(args) == (0 if installed else 1)
+    report = json.loads(Path(inputs["output"]).read_text(encoding="utf-8"))
+    assert {result["distro"] for result in report["results"]} == set(inputs["matrix"].split(","))
+    for result in report["results"]:
+        assert result["status"] == ("PASS" if installed else "FAIL"), result
+        assert result["exit_code"] == (0 if installed else 1), result
+        if installed:
+            assert "mytool-test" in result["output_snippet"]
+        else:
+            assert "Installer did not create" in result["output_snippet"]