chore: additional error handling

Author: rinej

README.md

@@ -43,7 +43,7 @@ jobs:
           # keystore-store-password: ${{ secrets.KEYSTORE_STORE_PASSWORD }}
           # keystore-key-alias: 'your-key-alias'
           # keystore-key-password: ${{ secrets.KEYSTORE_KEY_PASSWORD }}
-          # keystore-path: 'tools/buildtools/upload-key.keystore' # Optional: custom keystore path
+          # keystore-path: 'tools/buildtools/upload-key.keystore' # Optional: for custom keystore locations
 ```
 
 ## Inputs

action.yml

@@ -205,7 +205,10 @@ runs:
       if: ${{ !env.ARTIFACT_URL && inputs.sign }}
       run: |
         KEYSTORE_TARGET_PATH="$ANDROID_SOURCE_DIR/$APP_NAME/${{ inputs.keystore-path }}"
-        mkdir -p "$(dirname "$KEYSTORE_TARGET_PATH")"
+        mkdir -p "$(dirname "$KEYSTORE_TARGET_PATH")" || {
+          echo "Failed to create keystore directory: $(dirname "$KEYSTORE_TARGET_PATH")"
+          exit 1
+        }
         if [ -n "${{ inputs.keystore-file }}" ]; then
           cp "${{ inputs.keystore-file }}" "$KEYSTORE_TARGET_PATH"
         else