I'm facing an issue with a Docker network setup that I'm trying to simplify to debug. Here's my Docker Compose file:
```yaml
services:
alpine-test:
image: alpine:latest
container_name: alpine-test
command: ["sleep", "infinity"] # this keeps the container running for debugging purposes
networks:
- testnet
networks:
testnet:
name: testnet
driver: bridge
```
I expected that my container would have internet access with this configuration, but it doesn't seem to work. The IP route inside the container shows the correct gateway, but I'm unable to ping google.de. Any suggestions on what I might be missing? Thanks for your help!
2 Answers
You might need to tweak your network settings a bit. If you're using a bridge network, sometimes you need to configure it properly. Check if your setup has any security groups or network policies that could be preventing the container from making outbound requests. Try testing with a basic container and see if it gets internet access!
It sounds like your container can communicate with other containers on the same network, but might not have outbound internet access. Do you have your firewall settings (like nftables or iptables) blocking the traffic? It might be worth checking that out! Also, just for troubleshooting, try running a different container to see if it can access the internet as well.
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