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Docker network configuration format

Formatting docker network inspect output

I use to fight against the "--format" value of "docker network inspect" in order to get what I want.

One of the things often need is the "Subnet" and "Gateway", so I keep it here for the archives:

$ docker network inspect worpdress-network --format "{{(index .IPAM.Config 0).Gateway}}"

And also:

$ docker network inspect worpdress-network --format "{{(index .IPAM.Config 0).Subnet}} {{(index .IPAM.Config 0).Gateway}}"

But if I want to loop on the networks:

$ docker network list --format "{{.Name}}"
  bridge
  host
  neo4j-core-01-network
  neo4j-core-02-network
  neo4j-core-03-network
  none
  worpdress-network

That helps me to have my kind of "list of named network"

for N in $(sudo docker network list --format "{{.Name}}"); 
do 
  sudo docker network inspect ${N} --format "{{(index .IPAM.Config 0).Subnet}} {{(index .IPAM.Config 0).Gateway}} {{.Name}}" 2>/dev/null ; 
done

Giving:

bridge 172.17.0.0/16 
172.18.0.0/29 172.18.0.1 neo4j-core-01-network 
172.18.0.8/29 172.18.0.9 neo4j-core-02-network
172.18.0.16/29 172.18.0.17 neo4j-core-03-network
172.19.0.0/16 172.19.0.1 worpdress-network

Note: blank lines are due to the "host" and "none" network, whch are dummy networks, without IP address assigned to them

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