Switch from Travis to GitHub Actions

.github/workflows/go.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Ensure all files were formatted as per gofmt
+      run: |
+        [ "$(gofmt -l $(find . -name '*.go') 2>&1)" = "" ]
+
+    - name: install binaries
+      run: go install github.com/google/dnsmasq_exporter
+
+    - name: build tests
+      run: go test -c
+
+    - name: docker build
+      run: docker build --pull --no-cache --rm -t=dns -f travis/Dockerfile .
+
+    - name: run tests in docker
+      run: docker run -v $PWD:/usr/src:ro dns /bin/sh -c './dnsmasq_exporter.test -test.v'
+

.travis.yml

@@ -1,22 +0,0 @@
-# Use the (faster) container-based infrastructure, see also
-# http://docs.travis-ci.com/user/workers/container-based-infrastructure/
-sudo: false
-dist: trusty
-services:
-  - docker
-
-language: go
-go:
-  - "1.17"
-go_import_path: github.com/stapelberg/dnsmasq_exporter
-
-
-script:
-  # Check whether files are syntactically correct.
-  - "gofmt -l $(find . -name '*.go' | tr '\\n' ' ') >/dev/null"
-  # Check whether files were not gofmt'ed.
-  - "gosrc=$(find . -name '*.go' | tr '\\n' ' '); [ $(gofmt -l $gosrc 2>&- | wc -l) -eq 0 ] || (echo 'gofmt was not run on these files:'; gofmt -l $gosrc 2>&-; false)"
-  - go vet .
-  - go test -c
-  - docker build --pull --no-cache --rm -t=dns -f travis/Dockerfile .
-  - docker run -v $PWD:/usr/src:ro dns /bin/sh -c './dnsmasq_exporter.test -test.v'