From 7b1a602fd42cedfe92adf0d7a32b42f7e7211b45 Mon Sep 17 00:00:00 2001
From: Guillaume Tardif <guillaume.tardif@gmail.com>
Date: Wed, 2 Dec 2020 12:05:59 +0100
Subject: [PATCH] If compose file has a build section and no image name, build
 image with the right derived image name (project_service), like
 docker-compose. See awesome_compose/react-express-mongodb example

Signed-off-by: Guillaume Tardif <guillaume.tardif@gmail.com>
---
 local/build.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/local/build.go b/local/build.go
index c2cf2827..1d854589 100644
--- a/local/build.go
+++ b/local/build.go
@@ -52,7 +52,11 @@ func (s *composeService) ensureImagesExists(ctx context.Context, project *types.
 			}
 		}
 		if service.Build != nil {
-			opts[service.Name] = s.toBuildOptions(service, project.WorkingDir)
+			imageName := service.Image
+			if imageName == "" {
+				imageName = project.Name + "_" + service.Name
+			}
+			opts[imageName] = s.toBuildOptions(service, project.WorkingDir)
 			continue
 		}