🔄 Add shellcheck to CI

.github/workflows/shellcheck.yml

@@ -0,0 +1,16 @@
+name: shellcheck
+on: [push, pull_request]
+
+jobs:
+  shellcheck:
+    name: shellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - name: ⤵️ Check out repository
+        uses: actions/checkout@v3
+
+      - name: 🦪 Run shellcheck
+        uses: sudo-bot/action-shellcheck@latest
+        with:
+            # https://github.com/koalaman/shellcheck#how-to-use
+            cli-args: "*.sh scripts/*.sh"

.github/workflows/yaml-lint.yml

@@ -1,4 +1,4 @@
-name: Lint
+name: yamllint
 on: [push, pull_request]
 
 jobs:

README.md

@@ -3,7 +3,8 @@ A docker-compose based samba server compatible with MacOS's TimeMachine.
 
 Quickly deployable on Raspberry Pi.
 
-![lint](https://github.com/cakeholeDC/timemachine/actions/workflows/yaml-lint.yml/badge.svg)
+![yaml-lint](https://github.com/cakeholeDC/timemachine/actions/workflows/yaml-lint.yml/badge.svg)
+![shellcheck](https://github.com/cakeholeDC/timemachine/actions/workflows/shellcheck.yml/badge.svg)
 
 ## Pre Reqs 👶 🛠
 - [docker](https://docs.docker.com/desktop/install/linux-install/)