Make early variables available for init without backend

Author: dflook

image/actions.sh

@@ -392,7 +392,7 @@ function set-common-plan-args() {
 function set-variable-args() {
     VARIABLE_ARGS=""
 
-    if [[ -n "$INPUT_VAR_FILE" ]]; then
+    if [[ -n "${INPUT_VAR_FILE:-}" ]]; then
         for file in $(echo "$INPUT_VAR_FILE" | tr ',' '\n'); do
 
             if [[ ! -f "$file" ]]; then
@@ -404,7 +404,7 @@ function set-variable-args() {
         done
     fi
 
-    if [[ -n "$INPUT_VARIABLES" ]]; then
+    if [[ -n "${INPUT_VARIABLES:-}" ]]; then
         echo "$INPUT_VARIABLES" >"$STEP_TMP_DIR/variables.tfvars"
         VARIABLE_ARGS="$VARIABLE_ARGS -var-file=$STEP_TMP_DIR/variables.tfvars"
     fi