Add lint to the project

.docker/lint-sh.Dockerfile

@@ -0,0 +1,8 @@
+FROM alpine:latest
+
+RUN apk -U upgrade && apk add shellcheck bash
+
+RUN mkdir /code
+WORKDIR /code
+
+CMD ./scripts/lint-sh.sh

.github/workflows/ci.yaml

@@ -0,0 +1,33 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clear up some space on runner
+        run: |
+          dpkg-query -Wf '${Installed-Size}\t${Package}\n' | sort -n | tail -n 100
+          df -h
+          sudo apt-get remove -y '^dotnet-.*'
+          sudo apt-get remove -y '^libclang.*'
+          sudo apt-get remove -y '^llvm-.*'
+          sudo apt-get remove -y '^mongodb-.*'
+          sudo apt-get remove -y '^mysql-.*'
+          sudo apt-get remove -y '^postgresql-.*'
+          sudo apt-get remove -y 'php.*'
+          sudo apt-get remove -y azure-cli google-cloud-sdk google-chrome-stable firefox powershell mono-devel
+          sudo apt-get autoremove -y
+          sudo apt-get clean
+          rm -rf /usr/share/dotnet/
+          df -h
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: run lint
+        run: |
+          make lint

Makefile

@@ -1,4 +1,4 @@
-.PHONY: run
+.PHONY: lint run
 
 run:
 	ansible-playbook \
@@ -7,3 +7,7 @@ run:
 		--extra-vars "current_user=$$USER home_folder=$$HOME" \
 		-vv \
 		provisioning.yml -i hosts
+
+lint:
+	docker build -q -f .docker/lint-sh.Dockerfile -t lint-sh .
+	docker run -v $$(pwd):/code lint-sh

scripts/lint-sh.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+SH_SCRIPTS="$(find . -name '*.sh' -o -name '.bashrc' -o -name '.bash_profile')"
+EXIT_STATUS=0
+
+for script in ${SH_SCRIPTS}; do
+    shellcheck "${script}" && continue
+    EXIT_STATUS=1
+done
+
+exit "${EXIT_STATUS}"