Fix Docker packaging

.dockerignore

@@ -3,6 +3,6 @@
 /vendor
 /data
 /bin
-/misc/docker
+/misc/docker/Dockerfile
 /.env
 /.env.dist

cmd/fake-smtp/smtp.go

@@ -43,7 +43,9 @@ func (b *Backend) AnonymousLogin(state *smtp.ConnectionState) (smtp.Session, err
 		return nil, smtp.ErrAuthRequired
 	}
 
-	return nil, nil
+	ctx := context.WithValue(context.Background(), container.KeyServiceContainer, b.ctn)
+
+	return &Session{ctx, b.ctn, "anonymous"}, nil
 }
 
 // A Session is returned after successful login.
@@ -105,6 +107,11 @@ func startSMTPServer(conf *config.Config, ctn *service.Container) {
 	s.MaxMessageBytes = conf.SMTP.MaxMessageBytes
 	s.MaxRecipients = conf.SMTP.MaxRecipients
 	s.AllowInsecureAuth = conf.SMTP.AllowInsecureAuth
+
+	if conf.SMTP.Username == "" && conf.SMTP.Password == "" {
+		s.AuthDisabled = true
+	}
+
 	if conf.SMTP.Debug {
 		s.Debug = os.Stdout
 	}

misc/docker/Dockerfile

@@ -14,8 +14,13 @@ COPY . /src
 
 WORKDIR /src
 
+RUN cp -f misc/docker/config-patch.yml misc/release/config-patch.yml
+
+RUN go get github.com/krishicks/yaml-patch/cmd/yaml-patch
+
 RUN npm install \
     && make vendor \
+    && echo "---" > ./misc/release/config-patch.yml \
     && make ARCH_TARGETS=amd64 release
 
 FROM busybox
@@ -24,4 +29,6 @@ COPY --from=build /src/release/fake-smtp-linux-amd64 /app
 
 WORKDIR /app
 
-CMD ["bin/fake-smtp", "--config", "fake-smtp.yml"]
+RUN mkdir -p /app
+
+CMD ["bin/fake-smtp", "--config", "config.yml"]

misc/docker/config-patch.yml

@@ -0,0 +1,4 @@
+---
+- op: replace
+  path: /smtp/debug
+  value: false