From 45fd597651ee6ddf923e02809471921b3549d4d1 Mon Sep 17 00:00:00 2001
From: Roman Vanicek <roman.vanicek@ivasoft.cz>
Date: Sun, 29 Mar 2026 00:39:04 +0000
Subject: [PATCH] Fix automatic upgrade

---
 upgrade-entrypoint.sh | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/upgrade-entrypoint.sh b/upgrade-entrypoint.sh
index 64ecb2d..b726c1a 100644
--- a/upgrade-entrypoint.sh
+++ b/upgrade-entrypoint.sh
@@ -11,15 +11,18 @@ if [ -f "$OLD_VERSION_FILE" ]; then
     if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
         echo "Data version ($OLD_VERSION) differs from engine ($NEW_VERSION). Starting upgrade..."
         
-        # 1. Move old data to a temporary folder
+        # Move old data to a temporary folder
         mkdir -p $DATA_DIR/old_data
         mv $DATA_DIR/* $DATA_DIR/old_data/ || true
         
-        # 2. Initialize new data directory
+        # Initialize new data directory
 				mkdir $DATA_DIR/new_data
         initdb -D $DATA_DIR/new_data
+
+				# Prevent error "You must have read and write access in the current directory."
+				cd $DATA_DIR
         
-        # 3. Run pg_upgrade
+        # Run pg_upgrade
         # --link is used to avoid copying files (fast, but requires a backup!)
         pg_upgrade \
             -d $DATA_DIR/old_data \
@@ -27,7 +30,8 @@ if [ -f "$OLD_VERSION_FILE" ]; then
             -b /usr/bin/postgres-16 \
             -B /usr/local/bin \
             --link
-            
+        
+				# Clean-up
         echo "Upgrade complete. Cleaning up..."
         rm -rf $DATA_DIR/old_data
 				mv $DATA_DIR/new_data/* $DATA_DIR/