[v10.0.x] Use latest grafana/docs-base image (#77311)

Use latest grafana/docs-base image (#77299)

* Use latest grafana/docs-base image

The pinned tag does not support recent shortcodes like `docs/public-preview`.

Signed-off-by: Jack Baldry <jack.baldry@grafana.com>

* Always pull the image

Signed-off-by: Jack Baldry <jack.baldry@grafana.com>

---------

Signed-off-by: Jack Baldry <jack.baldry@grafana.com>
(cherry picked from commit d8d7a40d13)

scripts/drone/steps/lib.star

@@ -786,6 +786,7 @@ def build_docs_website_step():
         "name": "build-docs-website",
         # Use latest revision here, since we want to catch if it breaks
         "image": images["docs"],
+        "pull": "always",
         "commands": [
             "mkdir -p /hugo/content/docs/grafana/latest",
             "echo -e '---\\nredirectURL: /docs/grafana/latest/\\ntype: redirect\\nversioned: true\\n---\\n' > /hugo/content/docs/grafana/_index.md",

scripts/drone/utils/images.star

@@ -29,7 +29,7 @@ images = {
     "openldap": "osixia/openldap:1.4.0",
     "drone_downstream": "grafana/drone-downstream",
     "docker_puppeteer": "grafana/docker-puppeteer:1.1.0",
-    "docs": "grafana/docs-base:dbd975af06",
+    "docs": "grafana/docs-base:latest",
     "cypress": "cypress/included:9.5.1-node16.14.0-slim-chrome99-ff97",
     "dockerize": "jwilder/dockerize:0.6.1",
     "shellcheck": "koalaman/shellcheck:stable",