feat(container): add pinned Playwright Docker image and compose stack for Matomo bootstrap

- Add Dockerfile based on pinned Playwright image (v1.46.0-jammy) for reproducible browser runtime
- Introduce docker-compose stack (MariaDB + Matomo + one-shot bootstrap)
- Extend Makefile with container image and stack management targets
- Add env.sample for environment-driven bootstrap configuration
- Relax Playwright dependency to >=1.46.0 to keep Nix builds compatible
- Add E2E test ensuring docker-compose bootstrap exits with 0 and prints token

pyproject.toml

@@ -12,9 +12,7 @@ authors = [{ name = "Kevin Veen-Birkenbach", email = "kevin@veen.world" }]
 license = { text = "MIT" }
 urls = { Homepage = "https://github.com/kevinveenbirkenbach/matomo-bootstrap" }
 
-dependencies = [
-  "playwright>=1.40.0",
-]
+dependencies = ["playwright>=1.46.0"]
 
 # Provides a stable CLI name for Nix + pip installs:
 [project.scripts]