diff --git a/action.yaml b/action.yaml
index 5b27fbf..ef2cb5f 100644
--- a/action.yaml
+++ b/action.yaml
@@ -44,7 +44,18 @@ runs:
 
     - name: Deploy Config
       shell: bash
-      run: ${{ github.action_path }}/config.sh
+      run: |
+        # Iterate over the sources and set the environment variables
+        params=()
+        for filename in ${{ inputs['compose-files'] }}; do
+            params+=("-f")
+            params+=("$filename")
+        done
+        for source in $CONFIG_ENV_VARS; do
+          echo "Updating $source"
+          echo defang config "${params[@]}" set -e $source
+          defang config "${params[@]}" set -e $source
+        done
       working-directory: ${{ inputs.cwd }}
       env:
         CONFIG_ENV_VARS: ${{ inputs['config-env-vars'] }}
diff --git a/config.sh b/config.sh
deleted file mode 100755
index a0b48fd..0000000
--- a/config.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/bin/bash
-
-# CONFIG_ENV_VARS is a space separated list of environment variables. i.e. "ENV_VAR1 ENV_VAR2 ENV_VAR3"
-
-if [ -z "$CONFIG_ENV_VARS" ]; then
-    echo "No environment variables to set."
-    echo "Moving on..."
-    exit 0
-fi
-
-echo "Setting config from environment variables..."
-
-# Function to handle setting the environment variables
-set_env_var() {
-    local source=$1
-
-    echo "Updating $source"
-    defang config set -e $source
-}
-
-# Split the CONFIG_ENV_VARS string by whitespace
-IFS=' ' read -r -a sources <<< "$CONFIG_ENV_VARS"
-
-# Iterate over the sources and set the environment variables
-for source in "${sources[@]}"; do
-    set_env_var "$source"
-done
\ No newline at end of file