Install recommendations in base image

Fixes jakejarvis#25 when I run from my computer

```
docker run --name lighthouse-action --workdir /github/workspace --rm -e OUTPUT_PATH=/github/workspace -e INPUT_URL=https://www.lewiscowles.co.uk -e HOME -e GITHUB_JOB -e GITHUB_REF -e GITHUB_SHA -e GITHUB_REPOSITORY -e GITHUB_REPOSITORY_OWNER -e GITHUB_RUN_ID -e GITHUB_RUN_NUMBER -e GITHUB_RETENTION_DAYS -e GITHUB_ACTOR -e GITHUB_WORKFLOW -e GITHUB_HEAD_REF -e GITHUB_BASE_REF -e GITHUB_EVENT_NAME -e GITHUB_SERVER_URL -e GITHUB_API_URL -e GITHUB_GRAPHQL_URL -e GITHUB_WORKSPACE=/github/workspace -e GITHUB_ACTION -e GITHUB_EVENT_PATH=/dev/null -e GITHUB_ACTION_REPOSITORY -e GITHUB_ACTION_REF -e GITHUB_PATH -e GITHUB_ENV -e RUNNER_OS -e RUNNER_TOOL_CACHE -e RUNNER_TEMP -e RUNNER_WORKSPACE -e ACTIONS_RUNTIME_URL -e ACTIONS_RUNTIME_TOKEN -e ACTIONS_CACHE_URL -e GITHUB_ACTIONS=true -e CI=true -v "/var/run/docker.sock":"/var/run/docker.sock" -v $(pwd):"/github/workspace" lighthouse-action
```

Obviously a lot I'm missing having just lifted this from the Github action namespace, and a little confused how `INPUT_URL` is mapped to `REPORT_URL` etc, but it worked to give me my 100 score 😁

Dockerfile.base

@@ -15,7 +15,7 @@ RUN apt-get update -qqy && \
 RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - && \
     sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list' && \
     apt-get update -qqy && \
-    apt-get install -qqy --no-install-recommends google-chrome-stable && \
+    apt-get install -qqy google-chrome-stable && \
     rm /etc/apt/sources.list.d/google-chrome.list && \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/*