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Details about how to use Kong in Docker can be found on the DockerHub repository hosting the image:?kong. We also have a?Docker Compose template?with built-in orchestration and scalability.

Here is a quick example showing how to connect a Kong container to a Cassandra or PostgreSQL container:

1. Create a Docker network

   You will need to create a custom network to allow the containers to discover and communicate with each other. In this example?kong-net?is the network name, you can use any name.

   $ docker network create kong-net
   

2. Start your database

   If you wish to use a Cassandra container:

   $ docker run -d --name kong-database \--network=kong-net \-p 9042:9042 \cassandra:3
   

   If you wish to use a PostgreSQL container:

   $ docker run -d --name kong-database \--network=kong-net \-p 5432:5432 \-e "POSTGRES_USER=kong" \-e "POSTGRES_DB=kong" \postgres:9.6
   

3. Prepare your database

   Run the migrations with an ephemeral Kong container:

   $ docker run --rm \--network=kong-net \-e "KONG_DATABASE=postgres" \-e "KONG_PG_HOST=kong-database" \-e "KONG_CASSANDRA_CONTACT_POINTS=kong-database" \kong:latest kong migrations up
   

   In the above example, both Cassandra and PostgreSQL are configured, but you should update the?KONG_DATABASE?environment variable with either?cassandra?or?postgres.

   Note: migrations should never be run concurrently; only one Kong node should be performing migrations at a time.

4. Start Kong

   When the migrations have run and your database is ready, start a Kong container that will connect to your database container, just like the ephemeral migrations container:

   $ docker run -d --name kong \--network=kong-net \-e "KONG_DATABASE=postgres" \-e "KONG_PG_HOST=kong-database" \-e "KONG_CASSANDRA_CONTACT_POINTS=kong-database" \-e "KONG_PROXY_ACCESS_LOG=/dev/stdout" \-e "KONG_ADMIN_ACCESS_LOG=/dev/stdout" \-e "KONG_PROXY_ERROR_LOG=/dev/stderr" \-e "KONG_ADMIN_ERROR_LOG=/dev/stderr" \-e "KONG_ADMIN_LISTEN=0.0.0.0:8001, 0.0.0.0:8444 ssl" \-p 8000:8000 \-p 8443:8443 \-p 8001:8001 \-p 8444:8444 \kong:latest
   

5. Use Kong

   Kong is running:

   $ curl -i http://localhost:8001/
   

   Quickly learn how to use Kong with the?5-minute Quickstart.

轉自Docker官網：https://docs.konghq.com/install/docker/