Create tools/docker_image_tag.py (#3758)

[skip ci]

tools/docker_image_tag.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+"""
+Get the current versions of Chrome and Firefox to aid in tagging Docker images.
+
+Old Docker image tag: 20230411-chromelatest-firefoxlatest
+New Docker image tag: 20230411-chrome112-firefox112-py311
+"""
+from datetime import date
+from sys import version_info
+
+import requests
+
+
+def latest_version_of_chrome() -> str:
+    URL = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE"
+    return requests.get(URL).text.split(".")[0]
+
+
+def latest_version_of_firefox() -> str:
+    URL = "https://www.mozilla.org/en-US/firefox/releasenotes"
+    return requests.get(URL, allow_redirects=True).url.split("/")[-3].split(".")[0]
+
+
+def docker_image_tag() -> str:
+    """
+    Return 20230411-chrome112-firefox112-py311
+    """
+    chrome = f"chrome{latest_version_of_chrome()}"
+    firefox = f"firefox{latest_version_of_firefox()}"
+    python = "py{}{}".format(*version_info)
+    return f"{date.today():%Y%m%d}-{chrome}-{firefox}-{python}"
+
+
+if __name__ == "__main__":
+    print(latest_version_of_chrome())
+    print(latest_version_of_firefox())
+    print(docker_image_tag())