Improve project setup with Docker

entrypoint.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# This script is used to inject env variables in Docker after the build. 
+# Normally the env variables get injecten while the build. This means, you can't add env variables when you start the conatainer.
+# Source of the script: https://raphaelpralat.medium.com/system-environment-variables-in-next-js-with-docker-1f0754e04cde
+
+set +x
+
+envFilename='.env'
+nextFolder='./.next/'
+function apply_path {
+  # read all config file  
+  while read line; do
+    # no comment or not empty
+    if [ "${line:0:1}" == "#" ] || [ "${line}" == "" ]; then
+      continue
+    fi
+    
+    # split
+    configName="$(cut -d'=' -f1 <<<"$line")"
+    configValue="$(cut -d'=' -f2 <<<"$line")"    
+    # get system env
+    envValue=$(env | grep "^$configName=" | grep -oe '[^=]*$');
+    
+    # if config found
+    if [ -n "$configValue" ] && [ -n "$envValue" ]; then
+      # replace all
+      echo "Replace: ${configValue} with: ${envValue}"
+      find $nextFolder \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i "s#$configValue#$envValue#g"
+    fi
+  done < $envFilename
+  }
+  
+apply_path
+echo "Starting Nextjs"
+exec "$@"