feat: Builds docker image during tests in ci

justfile

@@ -1,8 +1,8 @@
 docker_image := "purchase_orders"
 docker_tag := "latest"
 
-build-docker:
-  @docker build -t {{docker_image}}:{{docker_tag}} .
+build-docker file="Dockerfile":
+  @docker build -f {{file}} -t {{docker_image}}:{{docker_tag}} .
 
 seed:
   swift run App seed
@@ -19,8 +19,5 @@ clean:
 bootstrap:
   cp ./env.example .env
 
-test-docker:
-  @docker run --rm \
-    -v "${PWD}:/app" \
-    -w "/app" "swift:6.0-noble" \
-    swift test
+test-docker: (build-docker "dev.Dockerfile")
+  @docker run --rm {{docker_image}}:{{docker_tag}} swift test