ERROR: In file './docker-compose.yml', service 'networks' must be a mapping not an array.

[Aqrus404]

It seems like I've tried every spacing combination there is, but it still doesn't work. Do you guys have any ideas?

version: '2'

services:
  proxy:
    build: ./
  networks:
    - example1
    - example2
  ports:
    - "80:80"
    - "443:443"

networks:
  example1:
    external:
      - name: example1_default
  example2:
    external:
      - name: example2_default

[glours]

In your example the networks property of your proxy service isn't correctly indented so Compose identified it as a new service called networks

try this instead (FYI you don't need the version property anymore)

services:
  proxy:
    build: ./
    networks:
      - example1
      - example2
    ports:
      - "80:80"
      - "443:443"

networks:
  example1:
    external:
      - name: example1_default
  example2:
    external:
      - name: example2_default

[kaffarell]

The problem is that you cannot put a "-" in front of the name attribute.

version: '3.8'

services:
  proxy:
    build: ./
    networks:
      - example1
      - example2
    ports:
      - "80:80"
      - "443:443"

networks:
  example1:
    external:
      name: example1_default
  example2:
    external:
      name: example2_default

Docker compose docs: https://docs.docker.com/compose/networking/

As external.name is deprecated (or soon to be deprecated) you should use this syntax:

version: '3.8'

services:
  proxy:
    build: ./
    networks:
      - example1
      - example2
    ports:
      - "80:80"
      - "443:443"

networks:
  example1:
    name: example1_default
    external: true
  example2:
    name: example2_default
    external: true

Found here: docker-archive/compose-cli#1856

[Aqrus404]

Oh my god you guys are amazing! I wasn't even able to respond to @kaffarell and you solved it! thank you a lot!

[Noelleganyou]

Lorsque je lance mon fichier docker-compose.yml, cela me met "service must be a mapping" ou "volume must be a mapping"

version: '3'
services:
db:
wordpress:
depends_on:

• db
  image: mysql:5.7
  wordpress:latest
  ports:
• "8000:80"
  volumes:
• db_data:/var/lib/mysql
  db_data: {}
  restart: always
  MYSQL_ROOT_PASSWORD: wordpress
  MYSQL_DATABASE: wordpress
  MYSQL_USER: wordpress
  MYSQL_PASSWORD: wordpress
  environment:
  WORDPRESS_DB_HOST: db:3306
  WORDPRESS_DB_USER: wordpress
  WORDPRESS_DB_PASSWORD: wordpress
  WORDPRESS_DB_NAME: wordpress

[glours]

@Noelleganyou le fichier docker-compose.yml doit être au format Yaml qui accorde une importance particulière aux identations pour définier des blocs de données
Vous pouvez vous inspirez de l'exemple avec wordpress et mysql proposé dans awesome-compose

[Noelleganyou]

@glours Merci beaucoup

[Noelleganyou]

Bonsoir, SVP j'ai un problème avec mon code java. J'ai écrit un code sur eclipse permettant de calculer le quotient d'une division et cela doit vérifier si le diviseur et le dividende entrés sont positif ou négatif.
Voici le programme :

public class Principale03 {

public static void main(String[] args) {
	// Déclaration des variables
	int diviseur;
	double dividende, quotient;
	
	//Enregistrement des valeurs entrées par l'utilisateur
	Scanner clavier = new Scanner(System.in);
	System.out.print("Entrer la valeur du dividende :");
	dividende = clavier.nextDouble();
	System.out.print("Entrer la valeur du diviseur :");
	diviseur = clavier.nextInt();
	
	//calcul du quotient
	quotient = dividende / diviseur;
	System.out.print("Le quotient est : " + quotient);
	clavier.close();

}

public static void vérification(int diviseur, double dividende, double quotient) throws Exception {
		if ((dividende > 0) && (diviseur > 0)) throw new Exception("Le quotient est : " + quotient);
		if ((dividende < 0) | (diviseur < 0)) throw new Exception("Veuiller entrer un nombre positif");
		
		
}

}