experiment with adding github actions

switching away from travis

.github/workflows/test.yml

@@ -0,0 +1,77 @@
+name: Test
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Update apt
+        env:
+          DEBIAN_FRONTEND: noninteractive
+        run:
+          sudo apt-get update -qq -o Acquire::Retries=3
+
+      - name: Install platform dependencies
+        env:
+          DEBIAN_FRONTEND: noninteractive
+        run:
+          sudo apt-get install --fix-missing -qq -o Acquire::Retries=3
+                gtk-doc-tools
+                gobject-introspection
+                python3-pip
+                python3-setuptools
+                python3-wheel
+                libfftw3-dev
+                libexif-dev
+                libjpeg-turbo8-dev
+                libpng-dev
+                libwebp-dev
+                libtiff5-dev
+                libheif-dev
+                libexpat1-dev
+                libcfitsio-dev
+                libgsl-dev
+                libmatio-dev
+                libnifti-dev
+                liborc-0.4-dev
+                liblcms2-dev
+                libpoppler-glib-dev
+                librsvg2-dev
+                libgif-dev
+                libopenexr-dev
+                libpango1.0-dev
+                libgsf-1-dev
+                libopenslide-dev
+                libffi-dev
+
+      - name: Configure libvips
+        run: ./autogen.sh
+            --disable-dependency-tracking
+            --disable-deprecated
+
+      - name: Build libvips
+        run: make V=0
+
+      - name: Check libvips
+        run: make V=0 check
+
+      - name: Install libvips
+        run: make V=0 install
+
+      - name: Install pyvips
+        run: pip3 install pyvips pytest
+
+      - name: Run test suite
+        run: pytest
+
+