chore: add basic workflows for manually running Terraform and Ansible from GitHub Actions

Part of #1631

[skip ci]

Author: php-coder

.github/workflows/provision-by-ansible.yml

@@ -0,0 +1,34 @@
+name: Provision a server by Ansible
+
+on:
+  # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#onworkflow_dispatch
+  workflow_dispatch:
+
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read # for "git clone"
+
+defaults:
+  # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#defaultsrun
+  run:
+    # Enable fail-fast behavior using set -eo pipefail
+    # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
+    shell: bash
+
+jobs:
+  setup-server:
+    name: Provision a server
+    # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on
+    runs-on: ubuntu-20.04
+    steps:
+
+      - name: Clone source code
+        uses: actions/[email protected] # https://github.com/actions/checkout
+        with:
+          # Whether to configure the token or SSH key with the local git config. Default: true
+          persist-credentials: false
+
+      - name: Install ansible
+        # The command pip3 install --user ansible==2.10.17 doesn't work as we have an old version
+        # See https://docs.ansible.com/ansible/2.10/installation_guide/intro_installation.html#installing-devel-from-github-with-pip
+        run: python3 -m pip install --user https://github.com/ansible/ansible/archive/refs/tags/v2.10.17.tar.gz

.github/workflows/provision-by-terraform.yml

@@ -0,0 +1,33 @@
+name: Setup a server by Terraform
+
+on:
+  # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#onworkflow_dispatch
+  workflow_dispatch:
+
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read # for "git clone"
+
+defaults:
+  # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#defaultsrun
+  run:
+    # Enable fail-fast behavior using set -eo pipefail
+    # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
+    shell: bash
+
+jobs:
+  setup-server:
+    name: Setup a server
+    # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on
+    runs-on: ubuntu-20.04
+    steps:
+
+      - name: Clone source code
+        uses: actions/[email protected] # https://github.com/actions/checkout
+        with:
+          # Whether to configure the token or SSH key with the local git config. Default: true
+          persist-credentials: false
+
+      - name: Install terraform
+        working-directory: infra/terraform
+        run: tfenv install