Simplify CI file (#176)

Remove use of 'sandbox' image. While doing so, simplify the CI.

For it/gitlab-ci-images#52

Co-authored-by: Boris Yakobowski <[email protected]>

Author: sebastianpoeplau

.adacore-gitlab-ci.yml

@@ -1,24 +1,5 @@
-workflow:
-  rules:
-    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
-
-anod_build:
-  services:
-    - image:sandbox
-    - cpu:8
-    - mem:16
-  stage: build
-  script:
-    - export ANOD_DEFAULT_SANDBOX_DIR=/it/wave
-
-    # Check out QSYM
-    - cd runtime/qsym_backend
-    - git clone -b symcc https://gitlab-ci-token:${CI_JOB_TOKEN}@${CI_SERVER_HOST}:${CI_SERVER_PORT}/eng/fuzz/qsym
-
-    # Use our repositories
-    - anod vcs --add-repo symcc $CI_PROJECT_DIR
-    - anod vcs --add-repo qsym $CI_PROJECT_DIR/runtime/qsym_backend/qsym
-
-    # Build SymCC
-    - anod source symcc
-    - anod build symcc
+include:
+  - component: $CI_SERVER_FQDN/eng/gitlab-templates/build@~latest
+    inputs:
+      anod-args: build symcc
+      generic-anod-ci-args: --add-dep eng/fuzz/qsym