Containers & Network Requests
some-api.com/
Requests from container to WWW
Requires a container
network
GET /some-api.com/
SQL Database
<Your App>
Requests from container to
other container
Use host.docker.internal
as address
Requests from container to host machine
Your Host Machine
Creating Container Networks
docker run --network my_network …
Network
Container 1
Container 2
Container 3
Within a Docker network, all containers can communicate with
each other and IPs are automatically resolved
Understanding Docker Network IP Resolving
Docker will NOT replace your
source code.
It simply detects outgoing
requests and resolves the IP
for such requests
Requires a container
network + use container
name as address
GET /some-api.com/
SQL Database
<Your App>
Requests from container to
other container
Use host.docker.internal
as address
Requests from container to host machine
Your Host Machine