[ci] schedule daily docker rebuild and pull latest base images (#19)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: labo-flg <146674147+labo-flg@users.noreply.github.com>

Author: Copilot

.circleci/config.yml

@@ -33,11 +33,11 @@ jobs:
           command: echo "$DOCKERHUB_PASS" | docker login -u "$DOCKERHUB_USERNAME" --password-stdin
       - run:
           name: Build Docker image filigran/python-nodejs-fips
-          command: docker buildx build --platform $BUILDX_PLATFORMS -f Dockerfile_python_nodejs -t filigran/python-nodejs-fips:python3.12-nodejs22 -t filigran/python-nodejs-fips:latest --push .
+          command: docker buildx build --pull --platform $BUILDX_PLATFORMS -f Dockerfile_python_nodejs -t filigran/python-nodejs-fips:python3.12-nodejs22 -t filigran/python-nodejs-fips:latest --push .
           no_output_timeout: 30m
       - run:
           name: Build Docker image filigran/python-fips
-          command: docker buildx build --platform $BUILDX_PLATFORMS -f Dockerfile_python -t filigran/python-fips:python3.12 -t filigran/python-fips:latest --push .
+          command: docker buildx build --pull --platform $BUILDX_PLATFORMS -f Dockerfile_python -t filigran/python-fips:python3.12 -t filigran/python-fips:latest --push .
           no_output_timeout: 30m
       - ms-teams/report:
           only_on_fail: false
@@ -55,6 +55,13 @@ jobs:
 
 workflows:
   docker:
+    triggers:
+      - schedule:
+          cron: "0 0 * * *"
+          filters:
+            branches:
+              only:
+                - main
     jobs:
       - build_docker:
           filters: