Docker: how to use a configuration file (#1634)

* Docker: how to use a configuration file

Signed-off-by: Gabriel Lopes Rodrigues <[email protected]>

* Docker: fix closing tabs

Signed-off-by: Gabriel Lopes Rodrigues <[email protected]>

* Docker: break lines inside commands

Signed-off-by: Gabriel Lopes Rodrigues <[email protected]>

---------

Signed-off-by: Gabriel Lopes Rodrigues <[email protected]>

Author: mrgalopes

installation/docker.md

@@ -11,6 +11,28 @@ Use the following command to start Docker with Fluent Bit:
 docker run -ti cr.fluentbit.io/fluent/fluent-bit
 ```
 
+### Use a configuration file
+
+Use the following command to start Fluent Bit while using a configuration file:
+
+{% tabs %}
+{% tab title="fluent-bit.conf" %}
+```shell
+docker run -ti -v ./fluent-bit.conf:/fluent-bit/etc/fluent-bit.conf \
+  cr.fluentbit.io/fluent/fluent-bit
+```
+{% endtab %}
+
+{% tab title="fluent-bit.yaml" %}
+```shell
+docker run -ti -v ./fluent-bit.yaml:/fluent-bit/etc/fluent-bit.yaml \
+  cr.fluentbit.io/fluent/fluent-bit \
+  -c /fluent-bit/etc/fluent-bit.yaml
+```
+{% endtab %}
+{% endtabs %}
+
+
 ## Tags and versions
 
 The following table describes the Linux container tags that are available on Docker