Add GitHub action workflow

Author: danhper

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: Elixir CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    name: Build and test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Elixir
+      uses: erlef/setup-beam@61e01a43a562a89bfc54c7f9a378ff67b03e4a21 # v1.16.0
+      with:
+        elixir-version: '1.17.2'
+        otp-version: '27.0'
+    - name: Restore dependencies cache
+      uses: actions/cache@v3
+      with:
+        path: deps
+        key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+        restore-keys: ${{ runner.os }}-mix-
+    - name: Install dependencies
+      run: mix deps.get
+    - name: Run tests
+      run: mix test

README.md

@@ -1,6 +1,6 @@
 # elixir-temp
 
-[![Build Status](https://travis-ci.org/danhper/elixir-temp.svg?branch=master)](https://travis-ci.org/danhper/elixir-temp)
+![Build status](https://github.com/danhper/elixir-temp/actions/workflows/ci.yml/badge.svg)
 [![Module Version](https://img.shields.io/hexpm/v/temp.svg)](https://hex.pm/packages/temp)
 [![Hex Docs](https://img.shields.io/badge/hex-docs-lightgreen.svg)](https://hexdocs.pm/temp/)
 [![Total Download](https://img.shields.io/hexpm/dt/temp.svg)](https://hex.pm/packages/temp)