Update entrypoint script to read VITE environment variables and impro…

…ve variable handling

entrypoint.sh

@@ -2,16 +2,15 @@
 
 set -x
 
-# This script will read all the env variables prefixed with REACT_APP on start of the container and write them to the env.js file
+# This script will read all the env variables prefixed with VITE_ on start of the container and write them to the env.js file
 # The code uses this file as the env variables instead of the .env files
 # This makes it possible to use a single build artifact/image for multiple environment
 
-echo "window.env = {" >> /var/www/application/config/env.js
 
-for var in $(printenv); do
-    if [[ $var == VITE* ]]; then
-        key=$(echo $var | cut -f1 -d=)
-        value=$(echo $var | cut -f2 -d=)
+echo "window.env = {" > /var/www/application/config/env.js
+
+printenv | while IFS='=' read -r key value; do
+    if [[ $key == VITE* ]]; then
         echo "  \"$key\": \"$value\"," >> /var/www/application/config/env.js
     fi
 done