travis+github: move from Travis to GitHub Actions

.github/workflows/main.yml

@@ -0,0 +1,89 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - "master"
+  pull_request:
+    branches:
+      - "*"
+
+defaults:
+  run:
+    shell: bash
+
+env:
+  # go needs absolute directories, using the $HOME variable doesn't work here.
+  GOCACHE: /home/runner/work/go/pkg/build
+  GOPATH: /home/runner/work/go
+
+  # If you change this value, please change it in the following files as well:
+  # /Dockerfile
+  GO_VERSION: 1.17.8
+
+jobs:
+  ########################
+  # lint code
+  ########################
+  lint:
+    name: lint code
+    runs-on: ubuntu-latest
+    steps:
+      - name: git checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: go cache
+        uses: actions/cache@v1
+        with:
+          path: /home/runner/work/go
+          key: subasta-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-${{ hashFiles('**/go.sum') }}
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-
+            aperture-${{ runner.os }}-go-
+
+      - name: setup go ${{ env.GO_VERSION }}
+        uses: actions/setup-go@v2
+        with:
+          go-version: '~${{ env.GO_VERSION }}'
+
+      - name: lint
+        run: make lint
+
+  ########################
+  # run unit tests
+  ########################
+  unit-test:
+    name: run unit tests
+    runs-on: ubuntu-latest
+    strategy:
+      # Allow other tests in the matrix to continue if one fails.
+      fail-fast: false
+      matrix:
+        unit_type:
+          - unit-race
+    steps:
+      - name: git checkout
+        uses: actions/checkout@v2
+
+      - name: go cache
+        uses: actions/cache@v1
+        with:
+          path: /home/runner/work/go
+          key: subasta-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-${{ hashFiles('**/go.sum') }}
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-${{ github.job }}-
+            aperture-${{ runner.os }}-go-${{ env.GO_VERSION }}-
+            aperture-${{ runner.os }}-go-
+
+      - name: setup go ${{ env.GO_VERSION }}
+        uses: actions/setup-go@v2
+        with:
+          go-version: '~${{ env.GO_VERSION }}'
+
+      - name: run ${{ matrix.unit_type }}
+        run: make ${{ matrix.unit_type }}