Speed up CI

.gitlab-ci.yml

 # Optimising CI speed by using tips from https://blog.nimbleways.com/let-s-make-faster-gitlab-ci-cd-pipelines/
-image: adinapoli/gargantext:v3.2
+image: adinapoli/gargantext:v3.3
 
 variables:
   STACK_ROOT: "${CI_PROJECT_DIR}/.stack-root"
@@ -37,11 +37,12 @@ cabal:
       - .cabal/
     policy: pull-push
   script:
-    - nix-shell --run "./bin/update-project-dependencies $CABAL_STORE_DIR && cabal --store-dir=$CABAL_STORE_DIR v2-build --ghc-options='-O2 -fclear-plugins'"
+    - nix-shell --run "./bin/update-project-dependencies $CABAL_STORE_DIR && cabal --store-dir=$CABAL_STORE_DIR v2-build --flags test-crypto --ghc-options='-O0 -fclear-plugins'"
   allow_failure: false
 
 bench:
   stage: bench
+  when: manual # trigger it manually, as it causes full recompilation with optimisations enabled.
   cache:
     key: cabal.project
     paths: