Assumes you have authenticated to GCP on your host by running gcloud auth login & gcloud auth application-default

The commands below can be used to deploy the terraform configuration herein. I deliberately used docker image hashicorp/terraform rather than assuming one would have terraform installed however one would still need docker installed.

You will also need to have the Google Cloud SDK (aka gcloud) installed.

export PROJECT=$(gcloud config get-value core/project) # or whatever project you wish to use
export REGION=your_gcp_region #e.g. europe-west2, us-central1, etc...
docker run -it -v $(pwd):/tf -w /tf hashicorp/terraform init 
docker run -it -v ~/.config/gcloud:/root/.config/gcloud \
        -v $(pwd):/tf \
        -w /tf \
        hashicorp/terraform apply \
        -var project=${PROJECT} \
        -var region=${REGION} \
        -auto-approve

If the Dataflow job runs successfully then there should be some data in the BigQuery table. You can check this by issuing:

bq query --nouse_legacy_sql "select count(*) from ${PROJECT}.dataflow_demo.t"

destroy it all again:

docker run -it -v ~/.config/gcloud:/root/.config/gcloud -v $(pwd):/tf -w /tf hashicorp/terraform destroy -var project=${PROJECT} -var region=${REGION} -auto-approve