This is my sample docker-compose.yml file.

version: '2'
config-server:
  image: ccc/config-server
  restart: always
registration-server:
  image: ccc/registration-server
  restart: always
  ports:
    - 1111:1111


When I use docker-compose up -d I get an error: 

"ERROR: The Compose file './docker-compose.yml' is invalid because:
Additional properties are not allowed ('registration-server', 'config-server' were unexpected)

You might be seeing this error because you're using the wrong Compose file version. Either specify a version of "2" (or "2.0") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.
For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

    

        

    
            

                
    
    
        
    
    
        halfer20.4k19 gold badges109 silver badges202 bronze badges
        
    

            
    
        
            asked Aug 2, 2016 at 9:45
        
        
    
    
        
    
    
        ChintamaniChintamani1,16610 gold badges24 silver badges50 bronze badges
        
    

        
    





                
                
                    


                                        

            

            


    
    
You are missing a services keyword, your correct .yml is:

version: '2'
services:
  config-server:
    image: ccc/config-server
    restart: always
  registration-server:
    image: ccc/registration-server
    restart: always
    ports:
      - 1111:1111

    
    
    
        
            answered Aug 2, 2016 at 9:59
        
        
    
    
        
    
    
        michael_bitardmichael_bitard4,3221 gold badge28 silver badges38 bronze badges
        
    

    





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This can also happpen if one of the keys is misspelled. In my case memory was spelled incorrectly:
After fixing it:
version: "3.8"
services:
  redis:
    image: redis:alpine
    deploy:
      resources:
        limits:
          cpus: '0.50'
          memory: 50M
        reservations:
          cpus: '0.25'
          memory: 20M

    
    
    
        
            answered Jul 10, 2020 at 19:27
        
        
    
    
        
    
    
        z atefz atef7,7373 gold badges60 silver badges54 bronze badges
        
    

    

                                        

            

            


    
    In the This can also happen if, this can also happens if global level volumes is indented wrong, like not starting at column 0.
    
    
        
            answered Sep 17, 2021 at 8:34
        
        
    
    
        
    
    

    





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use this for your docker-compose.yml
services:
  postgres:
    image: postgres:15-alpine
    ports:
      - 5432:5432
    environment: 
      POSTGRES_DB: webapp_dev
      POSTGRES_HOST_AUTH_METHOD: trust 

    
    
    
        
            answered Aug 7, 2023 at 18:30
        
        
    
    
        
    
    
        Victor TimiVictor Timi4431 gold badge5 silver badges12 bronze badges
        
    

    


                        


                            
                                
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