Add template install and update scripts (#193)

## Changes

* Add download-and-install script
* Add install-template script
* Add update-template script
* Add template-only-cd.yml workflow

## Context

Based on similar scripts in template-infra and
template-application-nextjs so that we don't have to manually apply
changes to the test repos (e.g. platform-test-flask) every time there's
a change to the template.

For similar PR on nextjs see
navapbc/template-application-nextjs#93

Author: lorenyu

.github/workflows/template-only-cd.yml

@@ -0,0 +1,40 @@
+name: Template Deploy
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+# Only allow one workflow at a time to prevent race conditions when pushing changes to the project repo
+concurrency: template-only-cd
+
+jobs:
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout template repo
+        uses: actions/checkout@v3
+        with:
+          path: template-application-flask
+      - name: Checkout project repo
+        uses: actions/checkout@v3
+        with:
+          path: project-repo
+          repository: navapbc/platform-test-flask
+          token: ${{ secrets.PLATFORM_BOT_GITHUB_TOKEN }}
+
+      - name: Update application template
+        working-directory: project-repo
+        run: ../template-application-flask/template-only-bin/update-template.sh
+
+      - name: Push changes to project repo
+        working-directory: project-repo
+        run: |
+          git config user.name nava-platform-bot
+          git config user.email platform-admins@navapbc.com
+          git add --all
+          # Commit changes (if no changes then no-op)
+          git diff-index --quiet HEAD || git commit -m "Template application deploy #${{ github.run_id }}"
+          git push

.hadolint.yaml

@@ -1,5 +1,4 @@
 # List of settings and ignore or safelist findings for the hadolint scanner
-
 # For more information on any settings you can specify, see the actions' documentation here
 # https://github.com/hadolint/hadolint#configure
 failure-threshold: warning

README.md

@@ -17,21 +17,21 @@ The template application is intended to work with the infrastructure from [templ
 
 ## Installation
 
-To get started using the template infrastructure on your project, install the template by cloning the template repository and copying the following folders/files to your repository:
-
-```bash
-# fetch latest version of the template
-git clone --single-branch --branch main --depth 1 git@github.com:navapbc/template-application-flask.git
-
-cp -r \
-  template-application-flask/.github \
-  template-application-flask/docs \
-  template-application-flask/app \
-  template-application-flask/docker-compose.yml \
-  .
-
-# clean up the template folder
-rm -fr template-application-flask
-```
+To get started using the template application on your project:
+
+1. Run the [download and install script](./template-only-bin/download-and-install-template.sh) in your project's root directory.
+
+    ```bash
+    curl https://raw.githubusercontent.com/navapbc/template-application-flask/main/template-only-bin/download-and-install-template.sh | bash -s
+    ```
+
+    This script will:
+
+    1. Clone the template repository
+    2. Copy the template files into your project directory
+    3. Remove any files specific to the template repository.
+2. Optional, if using the Platform infra template: [Follow the steps in the `template-infra` README](https://github.com/navapbc/template-infra#installation) to set up the various pieces of your infrastructure.
+
+## Getting started
 
 Now you're ready to [get started](/docs/app/getting-started.md).

template-only-bin/download-and-install-template.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+set -euo pipefail
+
+echo "Fetch latest version of template-application-flask"
+git clone --single-branch --branch main --depth 1 git@github.com:navapbc/template-application-flask.git
+
+echo "Install template"
+./template-application-flask/template-only-bin/install-template.sh
+
+echo "Clean up template-application-flask folder"
+rm -fr template-application-flask

template-only-bin/install-template.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# This script installs template-application-flask to your project. Run
+# This script from your project's root directory.
+set -euo pipefail
+
+CUR_DIR=$(pwd)
+SCRIPT_DIR=$(dirname $0)
+TEMPLATE_DIR="$SCRIPT_DIR/.."
+
+echo "Copy files from template-application-flask"
+cd $TEMPLATE_DIR
+cp -r \
+  .github \
+  .dockleconfig \
+  .hadolint.yaml \
+  app \
+  docker-compose.yml \
+  docs \
+  $CUR_DIR
+cd -
+
+echo "Remove files relevant only to template development"
+rm .github/workflows/template-only-*

template-only-bin/update-template.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+#
+# This script updates template-application-flask in your project. Run
+# This script from your project's root directory.
+set -euo pipefail
+
+SCRIPT_DIR=$(dirname $0)
+
+echo "Install template"
+$SCRIPT_DIR/install-template.sh