ci: Only build custom images that need to be rebuilt

Signed-off-by: Rémy Coutable <remy@rymai.me>

.gitlab/ci/custom.images.yml

@@ -1,72 +1,54 @@
-.build_and_deploy:
-  extends: .build_and_push
-  script:
-    # Hack to set an array in /bin/sh
-    # http://unix.stackexchange.com/a/137571
-    - set -- $CI_JOB_NAME
-    - |
-      docker buildx build \
-        --cache-to=type=inline \
-        --cache-from="$CI_REGISTRY_IMAGE:$1" \
-        --platform=linux/${ARCH:-amd64} \
-        --push="${PUSH_CUSTOM_IMAGE:-false}" \
-        --label "ci_pipeline_url=$CI_PIPELINE_URL" \
-        --label "ci_job_url=$CI_JOB_URL" \
-        -t "$CI_REGISTRY_IMAGE:$1" \
-        -f "Dockerfile.$1" \
-        .
-
 danger:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 gitlab-charts-build-base-helm-3.7:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 gitlab-helm3.5-kubectl1.17:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 gitlab-vscode-nodeless:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 kaniko:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 release-tools:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 triage-ops-ruby-2.7:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 sitespeed-gitlab:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 ubi-release:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 www-gitlab-com-debian-bullseye-ruby-3.0-node-16:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 build-git:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 # Used by GitLab: https://gitlab.com/gitlab-org/gitlab/-/blob/13-8-stable-ee/lib/gitlab/ci/templates/Terraform.gitlab-ci.yml
 terraform:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 # Used by go projects for linting https://gitlab.com/gitlab-org/gitlab/blob/master/doc/development/go_guide/index.md#automatic-linting
 golangci-lint-alpine:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 # Used by gitlab-operator: https://gitlab.com/gitlab-org/cloud-native/gitlab-operator
 gitlab-operator-build-base-golang-1.18:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 alpine-bash-jq-curl-git:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 # Used by frontend related tasks for linting GraphQL
 apollo:
-  extends: .build_and_deploy
+  extends: .build_static_image
 
 zoekt-ci-image:
-  extends: .build_and_deploy
+  extends: .build_static_image