Port updater of docs.znc.in from travis to github actions

.ci/generate-docs.sh

@@ -7,7 +7,7 @@ doxygen
 cd "$HOME"
 git clone --depth=1 --branch=gh-pages github:znc/docs.git gh-pages || exit 1
 
-cd "$TRAVIS_BUILD_DIR/doc/html/"
+cd "$GITHUB_WORKSPACE/doc/html/"
 mv ~/gh-pages/.git ./
 echo docs.znc.in > CNAME
 git add -A
@@ -28,9 +28,9 @@ if [[ ! -f ~/docs_need_commit ]]; then
 fi
 
 git commit -F- <<EOF
-Latest docs on successful travis build $TRAVIS_BUILD_NUMBER
+Latest docs on successful CI build $GITHUB_RUN_NUMBER
 
-ZNC commit $TRAVIS_COMMIT
+ZNC commit $GITHUB_SHA
 EOF
 git push origin gh-pages
 

.github/workflows/build.yml

@@ -100,7 +100,7 @@ jobs:
   docker:
     name: Docker push
     runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request'
+    if: github.event_name == 'push'
     needs:
       - gcc
       - tarball
@@ -138,3 +138,24 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           build-args: |
             VERSION_EXTRA=+docker-git-
+
+  docs:
+    name: Docs push
+    runs-on: ubuntu-latest
+    if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - run: sudo apt-get update
+      - run: sudo apt-get install -y doxygen graphviz python3-yaml
+      - run: echo "$KEY" > ~/znc-github-key
+        env:
+          KEY: ${{ secrets.SSH_GITHUB_KEY_FOR_CI_BOT }}
+      - run: chmod 0600 ~/znc-github-key
+      - run: mkdir -p ~/.ssh
+      - run: cp .ci/ssh-config ~/.ssh/config
+        # It's not travis anymore, but oh well. TODO: fix
+      - run: git config --global user.email "travis-ci@znc.in"
+      - run: git config --global user.name "znc-travis"
+      - run: .ci/generate-docs.sh