fix UDI Entrypoint to use Base image entrypoint.

Author: cgruver

base/ubi9/entrypoint.sh

@@ -30,4 +30,25 @@ fi
 
 source kubedock_setup
 
+# Stow
+## Required for https://github.com/eclipse/che/issues/22412
+
+# /home/user/ will be mounted to by a PVC if persistUserHome is enabled
+mountpoint -q /home/user/; HOME_USER_MOUNTED=$?
+
+# This file will be created after stowing, to guard from executing stow everytime the container is started
+STOW_COMPLETE=/home/user/.stow_completed
+
+if [ $HOME_USER_MOUNTED -eq 0 ] && [ ! -f $STOW_COMPLETE ]; then
+    # Create symbolic links from /home/tooling/ -> /home/user/
+    stow . -t /home/user/ -d /home/tooling/ --no-folding -v 2 > /tmp/stow.log 2>&1
+    # Vim does not permit .viminfo to be a symbolic link for security reasons, so manually copy it
+    cp /home/tooling/.viminfo /home/user/.viminfo
+    # We have to restore bash-related files back onto /home/user/ (since they will have been overwritten by the PVC)
+    # but we don't want them to be symbolic links (so that they persist on the PVC)
+    cp /home/tooling/.bashrc /home/user/.bashrc
+    cp /home/tooling/.bash_profile /home/user/.bash_profile
+    touch $STOW_COMPLETE
+fi
+
 exec "$@"

universal/ubi9/Dockerfile

@@ -2,6 +2,7 @@
 
 # updateBaseImages.sh can't operate on SHA-based tags as they're not date-based or semver-sequential, and therefore cannot be ordered
 FROM quay.io/devfile/base-developer-image:ubi9-latest
+
 LABEL maintainer="Red Hat, Inc."
 
 LABEL com.redhat.component="devfile-universal-container"
@@ -413,18 +414,12 @@ EOF
 RUN echo 'export SDKMAN_DIR="/home/tooling/.sdkman"' >> ${PROFILE_EXT}
 RUN echo '[[ -s "$SDKMAN_DIR/bin/sdkman-init.sh" ]] && source "$SDKMAN_DIR/bin/sdkman-init.sh"' >> ${PROFILE_EXT}
 
-
-# Create symbolic links from /home/tooling/ -> /home/user/
-RUN stow . -t /home/user/ -d /home/tooling/ --no-folding
-
 # Set permissions on /etc/passwd, /etc/group, /etc/pki and /home to allow arbitrary users to write
 RUN chgrp -R 0 /home && chmod -R g=u /etc/passwd /etc/group /home /etc/pki
 
 # cleanup dnf cache
 RUN dnf -y clean all --enablerepo='*'
 
-COPY --chown=0:0 entrypoint.sh /
-
 USER 10001
 
 ENV HOME=/home/user