BRE-1158 Dockerfiles shared ownership (#880)

* BRE-1158 Dockerfiles shared ownership

* feat: Docker Compose rule

Author: fntyler

.github/CODEOWNERS

@@ -6,3 +6,9 @@
 
 # Default file owners.
 * @bitwarden/team-admin-console-dev
+
+# Docker-related files
+**/Dockerfile @bitwarden/team-appsec @bitwarden/dept-bre
+**/*.dockerignore @bitwarden/team-appsec @bitwarden/dept-bre
+**/entrypoint.sh @bitwarden/team-appsec @bitwarden/dept-bre
+**/docker-compose.yml @bitwarden/team-appsec @bitwarden/dept-bre