Patch envs to use /data from HF persistent storage

Dockerfile

@@ -15,6 +15,16 @@ RUN apt-get update && \
       libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
       xz-utils tk-dev libffi-dev liblzma-dev
 
+# Use HF persistent storage under /data if mounted
+ENV GISKARD_HF_DATA_DIR=/data/giskard/datadir
+RUN mkdir -p "${GISKARD_HF_DATA_DIR}" && chown -R giskard "${GISKARD_HF_DATA_DIR}"
+ENV PGDATA=$GISKARD_HF_DATA_DIR/database
+
+# Keep the original GSK_HOME for supervisord run files
+# We can still bring up supervisord in case of the persistent storage not working
+ENV GSK_RUN=$GSK_HOME
+RUN mkdir -p "${GSK_RUN}/run" && chown -R giskard "${GSK_RUN}/run"
+
 USER giskard
 
 ENV PYENV_ROOT="/home/giskard/.pyenv"
@@ -43,4 +53,8 @@ COPY --chown=giskard supervisord.conf $GSK_DIST_PATH
 # Internal workr doesn't download resource, but takes them directly from projects, so no cache
 ENV GSK_CACHE_DIR=projects
 
+# Redirect to HF persistent storage for Python ($GSK_HOME) and Java ($GISKARD_HOME)
+ENV GSK_HOME=$GISKARD_HF_DATA_DIR \
+    GISKARD_HOME=$GISKARD_HF_DATA_DIR
+
 EXPOSE 7860