We can easily run dockerized apps on Google Cloud using still beta Google Cloud Run.

One thing to keep in mind is to specify $PORT variable inside our Dockerfile, by default Cloud Run always uses PORT 8080, but for portability reasons we will specify it as a variable:

# Dockerfile for Google Cloud Run
FROM php:apache
ARG PORT
ENV PORT=${PORT:-8080}
COPY . /var/www/html/
RUN sed -i 's/80/8080/g' /etc/apache2/sites-available/000-default.conf /etc/apache2/ports.conf
RUN mv "$PHP_INI_DIR/php.ini-development" "$PHP_INI_DIR/php.ini"
RUN service apache2 restart
EXPOSE $PORT

So we can deploy and run the docker locally in this way:

$ docker build --tag user/image .
$ PORT=8080 && docker run -e PORT=${PORT} --rm -p 8080:${PORT} -it user/image

Once inside a directory with the Dockerfile and the application just run:

$ gcloud projects create new-project-$RANDOM
$ gcloud config set project $PROJECT_ID
$ gcloud builds submit --tag gcr.io/$PROJECT_ID/image .
$ gcloud config set run/region us-central1
$ gcloud beta run deploy --image gcr.io/$PROJECT_ID/image --platform managed

It takes some minutes but finally gets deployed and dumps where it was deployed, something like https://$IMAGE-xxxxxxxxxx-$ZONE.run.app