Fix shellcheck

.github/workflows/ci.yml

@@ -32,9 +32,10 @@ jobs:
         run: yarn install
         env:
           CI: true
-      - name: Install packages
+      - name: Setup
         run: |
           sudo apt install -y jsonlint
+          find . -type f -print0 | xargs -0 sed -i 's:#!/usr/bin/with-contenv bash:#!/bin/bash:g'
       - name: ESLint
         run: yarn eslint
       - name: Hadolint