Replace TravisCI with GitHub Actions (#45)

Replaces TravisCI (which has officially been shut down) with Github Actions, which now runs the unit tests.

You can see the pipeline passing over on my repo: https://github.com/anoadragon453/matrix-content-scanner/runs/2718947043

`Signed-off-by: Andrew Morgan <andrewm@element.io>`

.github/workflows/test.yml

@@ -0,0 +1,20 @@
+name: Unit tests
+on:
+ # Trigger the workflow on a pull request,, or when committing
+ # 'main' branch
+ pull_request:
+ push:
+ branches:
+ - main
+
+jobs:
+ run-unit-tests:
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v2
+
+ # Retrieve dependencies and set up the test environment
+ - run: make build
+
+ # Run the tests
+ - run: make test

README.md

@@ -3,8 +3,6 @@ Matrix Content Scanner
 
 A Web service for scanning media hosted on a [Matrix](https://matrix.org) content repository.
 
-[![Build Status](https://travis-ci.org/matrix-org/matrix-content-scanner.svg?branch=master)](https://travis-ci.org/matrix-org/matrix-content-scanner)
-
 # Introduction
 
 MCS allows for arbitrary scanning of content hosted on Matrix. When a Matrix client requests media