[ACS-12260]: Automated alfresco pdf rendered updates (#1319)

_ci/update-pdf-renderer/check-version.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+TAGS=$(gh api --paginate repos/Alfresco/alfresco-pdf-renderer/tags --jq '.[].name')
+LATEST=$(printf '%s\n' "${TAGS}" \
+  | grep -E '^[0-9]+\.[0-9]+\.[0-9]+-[0-9]+$' \
+  | sort -V \
+  | tail -n1 || true)
+
+if [ -z "${LATEST}" ]; then
+  echo "::error::Could not determine the latest alfresco-pdf-renderer release tag"
+  exit 1
+fi
+
+CURRENT_PDF=$(grep -oP '^ARG PDF_RENDERER_VERSION=\K.*' engines/pdfrenderer/Dockerfile)
+CURRENT_AIO=$(grep -oP '^ARG PDF_RENDERER_VERSION=\K.*' engines/aio/Dockerfile)
+if [ "${CURRENT_PDF}" != "${CURRENT_AIO}" ]; then
+  echo "::error::PDF_RENDERER_VERSION differs between Dockerfiles (pdfrenderer=${CURRENT_PDF}, aio=${CURRENT_AIO}); please reconcile them first"
+  exit 1
+fi
+CURRENT="${CURRENT_PDF}"
+
+echo "Latest alfresco-pdf-renderer release: ${LATEST}"
+echo "Current version in Dockerfiles:       ${CURRENT}"
+
+echo "latest=${LATEST}" >> "$GITHUB_OUTPUT"
+if [ "${LATEST}" = "${CURRENT}" ]; then
+  echo "Already up to date; nothing to do."
+  echo "changed=false" >> "$GITHUB_OUTPUT"
+else
+  echo "changed=true" >> "$GITHUB_OUTPUT"
+fi

_ci/update-pdf-renderer/update-dockerfiles.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# Rewrites the pinned ARG PDF_RENDERER_VERSION in both Dockerfiles.
+# Requires: LATEST.
+set -euo pipefail
+
+sed -i "s/^ARG PDF_RENDERER_VERSION=.*/ARG PDF_RENDERER_VERSION=${LATEST}/" \
+  engines/pdfrenderer/Dockerfile \
+  engines/aio/Dockerfile
+git --no-pager diff engines/pdfrenderer/Dockerfile engines/aio/Dockerfile