[ci] Enable ccache.

container-maker @ 10c99f0f

-Subproject commit ffecb1e1954cae61b2a37cd181f2d48bd9a3cf3d
+Subproject commit 10c99f0fbab844930de4d15a5596056095f10b90

scripts/ci/extends/template-build-linux.yml

@@ -5,8 +5,6 @@
   extends:
     - .test-artifacts
   dependencies: [meta, meta_container]
-  variables:
-    CCACHE_DIR: "$CI_PROJECT_DIR/.ccache"
 
   before_script:
     - mkdir -p $BUILD_DIR
@@ -23,7 +21,3 @@
     - if $BUILD_TESTS ; then $BUILD_CMD_PREFIX cmake --build . --target tests ; fi
     - if $BUILD_CTEST ; then $BUILD_CMD_PREFIX cmake --build . --target ctest ; fi
     - if $BUILD_CTEST ; then cp Testing/**/Test.xml Tests/ctest.xml ; fi
-
-  cache:
-    paths:
-      - $CCACHE_DIR

scripts/ci/jobs/build-gui-linux.yml

@@ -20,6 +20,3 @@ build gui linux:
       -DOGS_BUILD_GUI=ON
       -DOGS_BUILD_UTILS=ON
       -DOGS_USE_NETCDF=ON
-  cache:
-    paths:
-      - $CCACHE_DIR

scripts/ci/jobs/build-linux-frontend.yml

@@ -13,7 +13,3 @@ build linux frontend:
     - source scripts/env/eve/cli.sh
     - mkdir -p $BUILD_DIR
     - cd $BUILD_DIR
-
-  cache:
-    paths:
-      # do not cache CCACHE_DIR

scripts/ci/jobs/build_image.yml

@@ -10,13 +10,13 @@ build container images:
   script:
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
     - python ThirdParty/container-maker/ogscm/cli.py --build --ogs off
-      --pm system --cvode --cppcheck --docs --gcovr --tfel
+      --pm system --cvode --cppcheck --docs --gcovr --tfel --ccache
       --tag $CONTAINER_GCC_IMAGE --upload
     - python ThirdParty/container-maker/ogscm/cli.py --build --ogs off
-      --pm system --cvode --cppcheck --docs --gcovr --gui
+      --pm system --cvode --cppcheck --docs --gcovr --gui --ccache
       --tag $CONTAINER_GCC_GUI_IMAGE --upload
     - python ThirdParty/container-maker/ogscm/cli.py --build --ogs off
-      --compiler clang --compiler_version 9
+      --compiler clang --compiler_version 9 --ccache
       --tag $CONTAINER_CLANG_IMAGE --upload
 
 ### global project images ###

scripts/ci/jobs/check-header.yml

@@ -8,7 +8,6 @@ check header:
   dependencies: [meta_container]
   variables:
     BUILD_DIR: "build-check-header"
-    CCACHE_DIR: "$CI_PROJECT_DIR/.ccache"
     CMAKE_ARGS: "-DOGS_CHECK_HEADER_COMPILATION=ON -DOGS_BUILD_UTILS=ON -DOGS_BUILD_GUI=ON -DOGS_USE_PYTHON=ON -DBUILD_SHARED_LIBS=ON"
   image:
     name: $CONTAINER_GCC_GUI_IMAGE
@@ -21,6 +20,3 @@ check header:
       -DCMAKE_BUILD_TYPE=$BUILD_TYPE
       -DOGS_BUILD_PROCESSES=$BUILD_PROCESSES || true
     - cat CMakeFiles/CMakeError.log
-  cache:
-    paths:
-      - $CCACHE_DIR

scripts/ci/jobs/tests-large.yml

@@ -8,7 +8,6 @@ tests large:
   dependencies: [meta_container]
   variables:
     BUILD_DIR: "build-tests-large"
-    CCACHE_DIR: "$CI_PROJECT_DIR/.ccache"
     CMAKE_ARGS: "-DOGS_USE_CONAN=OFF"
   image:
     name: $CONTAINER_GCC_IMAGE
@@ -24,6 +23,3 @@ tests large:
   artifacts:
     paths:
       - $BUILD_DIR/Tests/ctest.xml
-  cache:
-    paths:
-      - $CCACHE_DIR