fix with matrix

.github/ci/files/docker-compose.yaml

@@ -1,6 +1,6 @@
 services:
     db:
-        image: mysql:latest
+        image: ${DOCKER_DATABASE}
         working_dir: /application
         command: [ mysqld, --log_bin_trust_function_creators=1, --character-set-server=utf8mb4, --collation-server=utf8mb4_unicode_ci, --innodb-file-per-table=1 ]
         volumes:

.github/workflows/pimcore-demo-mysql.yml

@@ -16,6 +16,13 @@ on:
 jobs:
   test-pimcore-demo:
     runs-on: ubuntu-latest
+    strategy:
+        matrix:
+            include:
+                - { php-version: 8.1, database: "mariadb:10.3", dependencies: lowest, pimcore_version: "", experimental: false }
+                - { php-version: 8.2, database: "mariadb:10.7", dependencies: highest, pimcore_version: "", experimental: false }
+                - { php-version: 8.2, database: "mysql:latest", dependencies: highest, pimcore_version: "", experimental: false }
+                - { php-version: 8.2, database: "mariadb:10.7", dependencies: highest, pimcore_version: "11.x-dev as 11.0.0", experimental: true }
     steps:
     # Check out the repo in a sub-dir to see if it can serve as
     # template for `composer create-project`
@@ -64,6 +71,9 @@ jobs:
         docker-compose -f docker-compose.yaml -f .github/ci/files/docker-compose.yaml config
 
     - name: Test pimcore installation
+      env:
+          PIMCORE_VERSION: "${{ matrix.pimcore_version }}"
+          DOCKER_DATABASE: "${{ matrix.database }}"
       run: |
         # Echo commands and terminate on first error
         set -ex
@@ -75,6 +85,10 @@ jobs:
         docker-compose down -v --remove-orphans
         docker-compose -f docker-compose.yaml -f .github/ci/files/docker-compose.yaml up -d
 
+        if [ ! -z "$PIMCORE_VERSION" ]; then
+        composer require --no-update pimcore/pimcore:"${PIMCORE_VERSION}"
+        fi
+
         # Install dockerize into the php container. We need it to block until
         # database is ready to serve connections.
         docker-compose exec -T -- php bash -c '\