FEAT: Installed LocalStack For Development

cms/main.go

@@ -66,8 +66,20 @@ func runServer() {
 		panic(fmt.Errorf("missing required env var: MEDIACONVERT_OUTPUT_BUCKET"))
 	}
 
+	// AWS_ENDPOINT_URL is only ever set when pointing at something other than
+	// real S3 — LocalStack, in docker-compose. Virtual-host addressing would
+	// resolve <bucket>.<endpoint host> there, which neither Docker's DNS nor
+	// LocalStack's own wildcard domain serves from inside a container, so those
+	// deployments need path-style URLs. Left off against real S3, which has
+	// been steering away from path-style for new buckets.
+	s3Options := func(o *s3.Options) {
+		if os.Getenv("AWS_ENDPOINT_URL") != "" || os.Getenv("AWS_ENDPOINT_URL_S3") != "" {
+			o.UsePathStyle = true
+		}
+	}
+
 	concreteS3Client := &services.S3Concrete{
-		S3Client: s3.NewFromConfig(awsConfig),
+		S3Client: s3.NewFromConfig(awsConfig, s3Options),
 		Bucket:   bucketName,
 	}
 	concreteS3Client.AssertSuccessfulConnection(context.Background())