Update docker installation instructions

Author: dwdougherty

content/operate/oss_and_stack/install/install-stack/docker.md

@@ -12,93 +12,45 @@ weight: 1
 
 ## Run Redis Community Edition (CE) on Docker
 
-To get started with Redis CE using Docker, you first need to select a Docker image:
-
-* `redis/redis-stack` contains both Redis Stack server and Redis Insight. This container is best for local development because you can use the embedded Redis Insight to visualize your data.
-
-* `redis/redis-stack-server` provides Redis Stack server only. This container is best for production deployment.
-
-## Getting started
-
-### redis/redis-stack-server
-
-To start Redis Stack server using the `redis-stack-server` image, run the following command in your terminal:
+To start Redis Community Edition server, using the `redis:<version>` image, run the following command in your terminal:
 
 {{< highlight bash >}}
-docker run -d --name redis-stack-server -p 6379:6379 redis/redis-stack-server:latest
+docker run -d --name redis -p 6379:6379 redis:<version>
 {{< / highlight >}}
 
-### redis/redis-stack
-
-To start a Redis Stack container using the `redis-stack` image, run the following command in your terminal:
-
-{{< highlight bash >}}
-docker run -d --name redis-stack -p 6379:6379 -p 8001:8001 redis/redis-stack:latest
-{{< / highlight >}}
-
-The `docker run` command above also exposes Redis Insight on port 8001. You can use Redis Insight by pointing your browser to `localhost:8001`.
-
 ## Connect with redis-cli
 
 You can then connect to the server using `redis-cli`, just as you connect to any Redis instance.
 
 If you don’t have `redis-cli` installed locally, you can run it from the Docker container:
 
 {{< highlight bash >}}
-$ docker exec -it redis-stack redis-cli
-{{< / highlight >}}
-
-## Configuration
-
-### Persistence in Docker
-
-To mount directories or files to your Docker container, specify `-v` to configure a local volume. This command stores all data in the local directory `local-data`:
-{{< highlight bash >}}
-$ docker run -v /local-data/:/data redis/redis-stack:latest
-{{< / highlight >}}
-
-### Ports
-
-If you want to expose Redis Stack server or Redis Insight on a different port, update the left hand of portion of the `-p` argument. This command exposes Redis Stack server on port `10001` and Redis Insight on port `13333`:
-{{< highlight bash >}}
-$ docker run -p 10001:6379 -p 13333:8001 redis/redis-stack:latest
+$ docker exec -it redis redis-cli
 {{< / highlight >}}
 
-### Config files
-
-By default, the Redis Stack Docker containers use internal configuration files for Redis. To start Redis with local configuration file, you can use the `-v` volume options:
+If you do have `redis-cli` installed locally, you can run it from your terminal:
 
 {{< highlight bash >}}
-$ docker run -v `pwd`/local-redis-stack.conf:/redis-stack.conf -p 6379:6379 -p 8001:8001 redis/redis-stack:latest
+$ redis-cli -h 127.0.0.1 -p 6379
 {{< / highlight >}}
 
-### Environment variables
-
-To pass in arbitrary configuration changes, you can set any of these environment variables:
-
-* `REDIS_ARGS`: extra arguments for Redis
+## Use a local configuration file
 
-* `REDISEARCH_ARGS`: arguments for the search and query features (RediSearch)
+By default, the Redis Docker containers use internal configuration files for Redis. To start Redis with local configuration file, you can do one of the following:
 
-* `REDISJSON_ARGS`: arguments for JSON (RedisJSON)
+You can create your own Dockerfile that adds a `redis.conf` from the context into `/data/`, like so.
 
-* `REDISTIMESERIES_ARGS`: arguments for time series (RedisTimeSeries)
-
-* `REDISBLOOM_ARGS`: arguments for  the probabilistic data structures (RedisBloom)
-
-
-For example, here's how to use the `REDIS_ARGS` environment variable to pass the `requirepass` directive to Redis:
+```
+FROM redis
+COPY redis.conf /usr/local/etc/redis/redis.conf
+CMD [ "redis-server", "/usr/local/etc/redis/redis.conf" ]
+```
+Alternatively, you can specify something along the same lines with docker run options.
 
 {{< highlight bash >}}
-docker run -e REDIS_ARGS="--requirepass redis-stack" redis/redis-stack:latest
+$ docker run -v /myredis/conf:/usr/local/etc/redis --name myredis redis redis-server /usr/local/etc/redis/redis.conf
 {{< / highlight >}}
 
-An example of setting [Redis persistence]({{< relref "/operate/oss_and_stack/management/persistence" >}}):
-{{< highlight bash >}}
-docker run -e REDIS_ARGS="--save 60 1000 --appendonly yes" redis/redis-stack:latest
-{{< / highlight >}}
+where `/myredis/conf/` is a local directory containing your `redis.conf` file. Using this method means that there is no need for you to have a Dockerfile for your redis container.
 
-Here's how to set a retention policy for time series:
-{{< highlight bash >}}
-docker run -e REDISTIMESERIES_ARGS="RETENTION_POLICY=20" redis/redis-stack:latest
-{{< / highlight >}}
+The mapped directory should be writable, as depending on the configuration and mode of operation, Redis may need to create additional configuration files or rewrite existing ones.