wip: add step using testcontainer

.drone.yml

@@ -73,6 +73,20 @@ steps:
       - 'database healthcheck'
       - 'dependencies and compile'
 
+  - name: testcontainer
+    image: *elixir
+    environment:
+      MIX_ENV: test
+    commands:
+      - apt-get update
+      - apt-get install -y git make
+      - mix do local.rebar --force, local.hex --force
+      - mix testcontainers.test
+    volumes: *volumes
+    depends_on:
+      - 'dependencies and compile'
+
+
   - name: audit deps
     image: *elixir
     commands: