Github actions for CI

.github/workflows/ci.yml

+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build_linux:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: make -j4
+
+  build_linux_armv7_neon:
+    runs-on: ubuntu-latest
+    container: dockcross/linux-armv7
+    steps:
+      - uses: actions/checkout@v2
+      - run: make platform=unix-armv7-neon-hardfloat -j4
+
+  build_osx:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: make platform=osx -j4
+
+  build_windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: CC=gcc make platform=win -j4
+

.travis.yml

-sudo: required
-
-services:
-  - docker
-
-script:
-  - make docker
-
-notifications:
-  email: false

Dockerfile

-FROM ubuntu:16.04
-MAINTAINER libretro
-
-# Update all dependencies
-ENV DEBIAN_FRONTEND=noninteractive
-RUN apt-get update && apt-get upgrade -y
-
-# Install RetroArch's build dependencies
-RUN apt-get install -y make git-core curl g++ pkg-config libglu1-mesa-dev freeglut3-dev mesa-common-dev libsdl1.2-dev libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-ttf2.0-dev software-properties-common
-
-# Install RetroArch from the PPA
-RUN apt-add-repository -y multiverse
-RUN add-apt-repository -y ppa:libretro/testing
-RUN apt-get update && apt-get upgrade -y
-RUN apt-get install retroarch -y
-RUN mkdir -p ~/.config/retroarch
-RUN echo "video_driver = \"null\"" >> ~/.config/retroarch/retroarch.cfg
-RUN echo "audio_driver = \"null\"" >> ~/.config/retroarch/retroarch.cfg
-RUN echo "confirm_on_exit = \"false\"" >> ~/.config/retroarch/retroarch.cfg
-
-VOLUME ["/app"]
-WORKDIR /app