fix: fix docker run commands with custom args

guides/operation/authentication/login-with-github.mdx

@@ -89,7 +89,7 @@ The last bit of configuration is the session details. In order for the browser t
 docker run -it --rm \
   -p 8080:8080 \
   -v "$(pwd)/config.yml:/config.yml" \
-  flipt/flipt:latest --config /config.yml
+  flipt/flipt:latest ./flipt --config /config.yml
 ```
 
 This will mount the `config.yml` as a volume in the container, and Flipt will use that configuration as it's provided as a command line flag option.

guides/operation/authentication/login-with-google.mdx

@@ -78,7 +78,7 @@ The `8080` port is the default for Flipt's HTTP service and can be changed via t
 docker run -it --rm \
   -p 8080:8080 \
   -v "$(pwd)/config.yml:/config.yml" \
-  flipt/flipt:latest --config /config.yml
+  flipt/flipt:latest ./flipt --config /config.yml
 ```
 
 ### 3. Navigate to the Flipt UI

guides/operation/authentication/login-with-keycloak.mdx

@@ -167,7 +167,7 @@ You can now start your Flipt instance using the following command:
 docker run -it --rm \
   -p 8080:8080 \
   -v "$(pwd)/config.yml:/config.yml" \
-  flipt/flipt:latest --config /config.yml
+  flipt/flipt:latest ./flipt --config /config.yml
 ```
 
 Once Flipt has started you can to navigate your browser to the [UI](http://localhost:8081) and attempt a login with Keycloak.

guides/operation/authorization/rbac-with-keycloak.mdx

@@ -173,7 +173,7 @@ docker run -it --rm \
   -p 8080:8080 \
   -v "$(pwd)/config.yml:/config.yml" \
   -v "$(pwd)/policy.rego:/policy.rego" \
-  flipt/flipt:latest --config /config.yml
+  flipt/flipt:latest ./flipt --config /config.yml
 ```
 
 ## Testing the Policy