ci: clean quality buildx cache after job

.gitea/workflows/ci-cd.yml

@@ -40,10 +40,23 @@ jobs:
         run: |
           set -euo pipefail
           ci_image="mostovik-backend-ci:${GITHUB_RUN_ID:-local}-${GITHUB_RUN_ATTEMPT:-1}"
-          docker build \
+          ci_builder="mostovik-backend-ci-${GITHUB_RUN_ID:-local}-${GITHUB_RUN_ATTEMPT:-1}"
+          cleanup() {
+            docker image rm --force "${ci_image}" >/dev/null 2>&1 || true
+            docker buildx rm "${ci_builder}" >/dev/null 2>&1 || true
+          }
+          trap cleanup EXIT
+
+          docker buildx create \
+            --name "${ci_builder}" \
+            --driver docker-container
+          docker buildx inspect "${ci_builder}" --bootstrap
+          docker buildx build \
+            --builder "${ci_builder}" \
             --file docker/Dockerfile \
             --target ci-deps-base \
             --tag "${ci_image}" \
+            --load \
             .
 
           tar --exclude=.git --exclude=.venv --exclude=.ruff_cache -cf - . \