Define PRE_COMMIT_HOME in dev.Dockerfile

Author: maresb

scripts/dev.Dockerfile

@@ -10,12 +10,13 @@ RUN : \
 
 ARG MAMBA_DOCKERFILE_ACTIVATE=1
 
+ENV PRE_COMMIT_HOME=/opt/.pre-commit-cache-prebuilt
 COPY --chown=${MAMBA_USER}:${MAMBA_USER} .pre-commit-config.yaml /fake-repo/.pre-commit-config.yaml
 RUN : \
     && sudo mkdir --mode=777 /opt/.pre-commit-cache-prebuilt \
     && cd /fake-repo \
     && git init \
-    && PRE_COMMIT_HOME=/opt/.pre-commit-cache-prebuilt pre-commit install-hooks \
+    && pre-commit install-hooks \
     && sudo rm -rf /fake-repo \
     && sudo chmod -R a+rwx /opt/.pre-commit-cache-prebuilt \
 ;