Update CI images paths

Recently we moved infrastructure repositories under a new path. Docker
registries have therefore moved too.  Reflect this in our CI settings.

.gitlab-ci.yml

@@ -68,7 +68,7 @@ stages:
 # -----------------------------------------------------------------------------
 .config:builder: &distro_builder
-  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/ci-docker-images/alt-builder:latest
+  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/infrastructure/ci-docker-images/alt-builder:latest
 .build:builder:
   <<: *distro_builder
@@ -101,7 +101,7 @@ test:builder:clang-sanitizers:
 # doc
 build:doc:
-  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/ci-docker-images/alt-builder:latest
+  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/infrastructure/ci-docker-images/alt-builder:latest
   stage: build
   before_script:
     - apt-get update && apt-get install -y doxygen graphviz
@@ -119,7 +119,7 @@ build:doc:
 .template:static-analysis:
   stage: build
-  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/ci-docker-images/alt-builder:latest
+  image: gitlab.fit.cvut.cz:5000/algorithms-library-toolkit/infrastructure/ci-docker-images/alt-builder:latest
   before_script:
     - mkdir -p build && pushd build
     - cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=ON .. -GNinja