DB multi-versions tests (#94)

* chore: adding env vars

* test

* hmm

* chore: try the new syntax

* chore: new syntax fix

.github/workflows/rust-test.yaml

@@ -12,6 +12,17 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        db:
+          - mysql: 8
+          - mysql: 5.7
+          - mysql: 5.6
+          - postgres: 16
+          - postgres: 15
+          - postgres: 14
+          - postgres: 13
+          - postgres: 12
 
     steps:
       - name: Checkout sources
@@ -37,6 +48,9 @@ jobs:
 
       - name: build docker-compose services for integration tests
         run: docker-compose -f docker-compose.yml up -d
+        env:
+          MYSQL_VERSION: ${{ matrix.db.mysql }}
+          PG_VERSION: ${{ matrix.db.postgres }}
 
       - uses: GuillaumeFalourd/wait-sleep-action@v1
         with:

docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.1'
 services:
 
   postgres:
-    image: postgres:13
+    image: postgres:${PG_VERSION:-13}
     restart: always
     environment:
       POSTGRES_PASSWORD: postgres
@@ -13,7 +13,7 @@ services:
       - 54321:5432
 
   mysql:
-    image: mysql:8
+    image: mysql:${MYSQL_VERSION:-8}
     restart: always
     volumes:
       - ./playpen/db/mysql_migration.sql:/docker-entrypoint-initdb.d/mysql_migration.sql