Docker-Compose file has yaml.scanner.ScannerError

Question

compose.yml file, which looks like this:

version: '2'
services:
  discovery-microservice:
    build: discovery-microservice
      context: /discovery-microservice/target/docker
      dockerfile: Dockerfile
  ports:
   - "8761:8761"

While I am executing it I get the following error:

yaml.scanner.ScannerError: mapping values are not allowed here
in "C:\...\docker-compose.yml", line 5, column 14

From what I see, nothing is wrong with the format, e.g. whitespaces missing. My overall goal is to specify a development mode docker-compose file, pointing it to the target directories from the different modules.
What am I doing wrong here?

Answer 1

Another possible culprit can be stray tabs at the end of the file, which I learned today.