build: add ddev switch typo3 version command

.ddev/commands/web/.install-12

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+## Description: Install TYPO3 12 integration instance.
+## Usage: install
+## Example: "ddev install 12"
+
+set +x
+set -e
+
+. .ddev/commands/web/.utils.sh
+
+restoreComposerFiles
+composer install --no-progress --no-interaction
+
+vendor/bin/typo3 database:updateschema
+vendor/bin/typo3 cache:flush

.ddev/commands/web/.install-13

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+## Description: Install TYPO3 13 integration instance.
+## Usage: install
+## Example: "ddev install 13"
+
+set +x
+set -e
+
+. .ddev/commands/web/.utils.sh
+
+stashComposerFiles
+
+composer remove saschaegerer/phpstan-typo3 --dev --no-interaction
+composer require typo3/cms-backend:'^13.4' typo3/cms-beuser:'^13.4' typo3/cms-core:'^13.4' \
+    typo3/cms-extbase:'^13.4' typo3/cms-frontend:'^13.4' \
+    --dev typo3/cms-base-distribution:'^13.4' typo3/cms-lowlevel:'^13.4' ssch/typo3-rector:'^3.0' \
+    --no-progress --no-interaction
+
+vendor/bin/typo3 database:updateschema
+vendor/bin/typo3 cache:flush

.ddev/commands/web/.utils.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+stashComposerFiles() {
+    cp composer.json composer.json.orig
+}
+
+restoreComposerFiles() {
+    local exit_status=$?
+    if [ -f "composer.json.orig" ]; then
+        mv composer.json.orig composer.json
+        local message='composer.json has been restored.'
+        if [ $exit_statusq 0 ]; then
+            message green "${message}"
+        else
+            message red "${message}"
+        fi
+    fi
+}
+
+message() {
+    local color=$1
+    local message=$2
+
+    case $color in
+        red)
+            echo "\033[31m$message\033[0m"
+            ;;
+        green)
+            echo "\033[32m$message\033[0m"
+            ;;
+        yellow)
+            echo "\033[33m$message\033[0m"
+            ;;
+        blue)
+            echo "\033[34m$message\033[0m"
+            ;;
+        magenta)
+            echo "\033[35m$message\033[0m"
+            ;;
+        cyan)
+            echo "\033[36m$message\033[0m"
+            ;;
+        *)
+            echo "$message"
+            ;;
+    esac
+}

.ddev/commands/web/install

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+## Description: Install TYPO3 instance.
+## Usage: install
+## Example: "ddev install 12"
+
+TYPO3=${1}
+
+if [ -f ".ddev/commands/web/.install-$TYPO3" ]; then
+    sh .ddev/commands/web/.install-$TYPO3
+else
+    echo "Error: version $TYPO3 not support."
+    exit 1
+fi

README.md

@@ -261,6 +261,15 @@ Wrong return url
 This could be caused by a strict referer header in your request. If the return url could not be determined correctly, you can force the url generation by pid and language in the extension setting: `forceReturnUrlGeneration`.
 </details>
 
+## Development
+
+Use the following ddev commands to easily switch the local TYPO3 versions.
+
+```bash
+ddev install 12
+ddev install 13
+```
+
 ## License
 
 This project is licensed