I am using version: '3.8'
services:
mydb:
image: mysql:5
environment:
MYSQL_ROOT_PASSWORD: shiva
mywordpress:
image: wordpress
ports:
- 8080:80
links:
- mydb: sqldb
Below is the error message:
services.mywordpress.links.0 must be a string
If you look at your posted YAML, the services.mywordpress.links.0 is defined as a mapping (mydb: sqldb which is a key:value pair). The error you posted states that it must be a string.
The string should be the name of the service you are attempting to link, so probably just "mydb".
