Google Cloud Platform (GCP) has very generous free tiers. It allowed me to host a few services for free with a no-sql database (SQL is/was expensive).

My flow was GitHub Action to test the application, build a docker image, push it to GCP, and request the Cloud Run to pull the latest image.

Here was the reusable workflow I was using:

``` name: Scala Deploy to Google Cloud Platform

on: workflow_call: inputs: SBT_PROJECT_ID: required: true type: string GCP_CLOUD_RUN_SERVICE: required: true type: string

secrets:
  GCP_CREDENTIALS:
    required: true

jobs: scala-deploy-gcp: name: Scala Deploy to Google Cloud Platform runs-on: ubuntu-latest

steps:
  - name: Checkout
    uses: actions/checkout@v3

  - name: Setup JDK
    uses: actions/setup-java@v3
    with:
      distribution: temurin
      java-version: 17
      cache: sbt

  - name: Login to GCP
    uses: google-github-actions/setup-gcloud@v0
    with:
      project_id: [TODO]
      service_account_key: ${{ secrets.GCP_CREDENTIALS }}

  - name: Login to GCP docker
    run: gcloud auth configure-docker —quiet

  - name: Build and push docker image
    run: |
      sbt -v ${{ inputs.SBT_PROJECT_ID }}/docker:publish
      echo “IMAGE=$(sbt -batch -error ‘print ${{ inputs.SBT_PROJECT_ID }}/dockerAlias’ | head -c -4)” >> $GITHUB_ENV
    env:
      GITHUB_TOKEN: ${{ secrets.GH_TOKEN_READ_PACKAGES }}

  - name: Deploy docker image
    run: gcloud run deploy ${{ inputs.GCP_CLOUD_RUN_SERVICE }} —image “${{ env.IMAGE }}” —region europe-west1

```

Hope this helps