Fix truncated placeholder replace

From @dcdh nodeshift-blog-examples#3
hartraft · Dec 21, 2022 · 6e24f39 · 6e24f39
1 parent a2e0092
commit 6e24f39
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/start-nginx.sh b/start-nginx.sh
@@ -1,7 +1,11 @@
-#!/usr/bin/env bash
-export EXISTING_VARS=$(printenv | awk -F= '{print $1}' | sed 's/^/\$/g' | paste -sd,); 
+#!/usr/bin/env sh
+export EXISTING_VARS=$(printenv | awk -F= '{print $1}' | sed 's/^/\$/g' | paste -sd,);
 for file in $JSFOLDER;
 do
-  cat $file | envsubst $EXISTING_VARS | tee $file
+  if [ ! -f $file.tmp ]
+  then
+    cp $file $file.tmp
+  fi
+  cat $file.tmp | envsubst $EXISTING_VARS | tee $file
 done
 nginx -g 'daemon off;'