Hey there! If you’re scratching your head over the “network must be a mapping, not an array” error in your Docker Compose file, don’t sweat it – happens to the best of us! This little snag usually crops up when there’s a tiny syntax hiccup in the networks section. The trick here is to ensure that the networks part is set up like a cool map, you know, with keys and values, instead of resembling an array.
Here’s a nifty example to steer you in the right direction:
version: '3'
services:
service1:
image: your_image
networks:
- network1
- network2
service2:
image: your_image
networks:
- network2
networks:
network1:
network2:
Couple of pointers: keep the networks section hanging out just outside the services gang, and let each network shine as a key, with optional configurations if they’re feeling fancy (not shown in this laid-back example).
Give your Docker Compose file a once-over, making sure it follows this easygoing structure. If you spill more details or your specific Docker Compose file, I’m here to lend a hand!