fix: hanging awk script

templates/gitlab-ci-openshift.yml

@@ -260,7 +260,7 @@ stages:
   }
 
   function awkenvsubst() {
-    awk '{while(match($0,"[$%]{[^}]*}")) {g0=substr($0,RSTART,RLENGTH); val=ENVIRON[substr(g0,3,RLENGTH-3)]; gsub(g0,val)}}1'
+    awk '{while(match($0,"[$%]{[^}]*}")) {var=substr($0,RSTART+2,RLENGTH-3);val=ENVIRON[var]; gsub("[$%]{"var"}",val)}}1'
   }
 
   function pre_apply() {