use env config source only

action.yml

@@ -7,7 +7,7 @@ inputs:
   version:
     description: "The CLI version to install"
     required: true
-    default: "1.11.0"
+    default: "1.12.0"
   oidc-client-id:
     description: "The OIDC client ID to authenticate with"
     required: true
@@ -54,14 +54,11 @@ runs:
 
         sudo tar -zxvf ./cf_${CLI_VERSION}_linux_x86_64.tar.gz -C /usr/local/bin/
 
-        # set up the config file to prevent errors during CLI initialisation
-        mkdir -p ~/.cf
-        touch ~/.cf/config
-
     - name: Export environment variables to configure the CLI
       shell: bash
       run: |
         echo "CF_OIDC_CLIENT_ID=${{ inputs.oidc-client-id }}" >> $GITHUB_ENV
         echo "CF_OIDC_CLIENT_SECRET=${{ inputs.oidc-client-secret }}" >> $GITHUB_ENV
         echo "CF_OIDC_ISSUER=${{ inputs.oidc-issuer }}" >> $GITHUB_ENV
         echo "CF_API_URL=${{ inputs.api-url }}" >> $GITHUB_ENV
+        echo "CF_CONFIG_SOURCES=env" >> $GITHUB_ENV