First draft of actions based ci

Signed-off-by: Chris Patterson <chrispat@github.com>

.github/workflows/ci.yml

+name: CI
+
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    env:
+      DOCKER_BUILDTAGS: "include_oss include_gcs"
+      CGO_ENABLED: 1
+      GO111MODULE: "auto"
+      GOPATH: ${{ github.workspace }}
+      GOOS: linux
+      COMMIT_RANGE: ${{ github.event_name == 'pull_request' && format('{0}..{1}',github.event.pull_request.base.sha, github.event.pull_request.head.sha) || github.sha }}
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        path: src/github.com/docker/distribution
+        fetch-depth: 50
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.14.*
+
+    - name: Dependencies
+      run: |
+          sudo apt-get -q update
+          sudo -E apt-get -yq --no-install-suggests --no-install-recommends install python-minimal
+          cd /tmp && go get -u github.com/vbatts/git-validation
+
+    - name: Build
+      working-directory: ./src/github.com/docker/distribution
+      run: |
+        DCO_VERBOSITY=-q script/validate/dco
+        GO111MODULE=on script/setup/install-dev-tools
+        script/validate/vendor
+        go build -i .
+        make check
+        make build
+        make binaries
+        if [ "$GOOS" = "linux" ]; then make coverage ; fi
+
+    - uses: codecov/codecov-action@v1
+      with:
+        directory: ./src/github.com/docker/distribution
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.github/workflows/dummy.yml

-name: dummy
-
-on:
-  workflow_dispatch:
-  push:
-  pull_request:
-
-jobs:
-  dummy:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2

script/validate/dco

@@ -9,4 +9,4 @@ if ! command -v git-validation; then
 fi
 
 verbosity="${DCO_VERBOSITY--v}"
-GIT_CHECK_EXCLUDE="./vendor:./script/validate/template" git-validation "$verbosity" -run DCO,short-subject,dangling-whitespace
+GIT_CHECK_EXCLUDE="./vendor:./script/validate/template" git-validation "$verbosity" -range "$COMMIT_RANGE" -run DCO,short-subject,dangling-whitespace
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