Build and push to ghcr

Adds a GitHub Actions job that builds and pushes docker image to GitHub
Container Registry.

Image tags and labels are managed by the default strategy of
https://github.com/docker/metadata-action#basic action.

Also browser and driver versions are updated to the latest.

.github/workflows/docker.yml

@@ -0,0 +1,44 @@
+name: Docker Image
+
+on:
+  push:
+    branches:
+      - '**'
+    tags:
+      - 'v*.*.*'
+  pull_request:
+    branches:
+      - 'master'
+
+jobs:
+  build-and-push-docker-image:
+    name: Build Docker image and push to repository
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ghcr.io/${{ github.repository }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Github Packages
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build image and push to GitHub Container Registry
+        uses: docker/build-push-action@v2
+        with:
+          file: ./docker/Dockerfile
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          push: true

docker/Dockerfile

@@ -6,7 +6,7 @@ RUN apt-get update
 RUN apt-get install -y libgconf-2-4 wget xvfb unzip
 
 # Install Chrome (compatible version with chromedriver below)
-ARG CHROME_VERSION="87.0.4280.141-1"
+ARG CHROME_VERSION="99.0.4844.74-1"
 RUN wget --no-verbose -O /tmp/chrome.deb https://dl.google.com/linux/chrome/deb/pool/main/g/google-chrome-stable/google-chrome-stable_${CHROME_VERSION}_amd64.deb \
   && apt install -y /tmp/chrome.deb \
   && rm /tmp/chrome.deb
@@ -14,7 +14,7 @@ RUN wget --no-verbose -O /tmp/chrome.deb https://dl.google.com/linux/chrome/deb/
 # RUN wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb
 # RUN dpkg -i google-chrome-stable_current_amd64.deb; apt-get -fy install
 # Set up Chromedriver Environment variables
-ENV CHROMEDRIVER_VERSION 87.0.4280.88
+ENV CHROMEDRIVER_VERSION 99.0.4844.51
 ENV CHROMEDRIVER_DIR /chromedriver
 RUN mkdir $CHROMEDRIVER_DIR
 # Download and install Chromedriver