Fix the update script and .travis.yml.template

travis.yml.template

@@ -20,6 +20,17 @@ stages:
 
 jobs:
   include:
+    - stage: Test
+      env:
+        - TEST: Editor Config check
+      language: node_js
+      node_js:
+        - lts/*
+      install:
+        - npm i -g eclint
+      script:
+        - eclint check
+
     - stage: Test
       env:
         - TEST: Doc Toc Check
@@ -30,6 +41,14 @@ jobs:
           doctoc --title='## Table of Contents' --github README.md &&
           diff -q README.md README.md.tmp
 
+    - stage: Test
+      env:
+        - TEST: shfmt check
+      script:
+        - docker run -it --rm -v "$(pwd)":/sh -w /sh jamesmstone/shfmt -i 2 -l -w -ci .
+        - git diff --color
+        - git diff --stat=220 --color --exit-code
+
     - stage: Test
       env:
         - TEST: Shell Check

update.sh

@@ -37,7 +37,7 @@ function update_node_version() {
   fullVersion="$(curl -sSL --compressed "$baseuri" | grep '<a href="v'"$version." | sed -E 's!.*<a href="v([^"/]+)/?".*!\1!' | cut -d'.' -f2,3 | sort -n | tail -1)"
   (
     cp "$template" "$dockerfile"
-    local fromprefix
+    local fromprefix=""
     if [[ "$arch" != "amd64" && "$variant" != "onbuild" ]]; then
       fromprefix="$arch\\/"
     fi