BRE-1040 Dockerfiles shared ownership (#6257)

* Include AppSec team and BRE dept for repository-level ownership of Dockerfile, and Dockerfile related, files.

.github/CODEOWNERS

@@ -4,11 +4,12 @@
 #
 # https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners
 
-## Docker files have shared ownership ##
-**/Dockerfile
-**/*.Dockerfile
-**/.dockerignore
-**/entrypoint.sh
+## Docker-related files
+**/Dockerfile @bitwarden/team-appsec @bitwarden/dept-bre
+**/*.Dockerfile @bitwarden/team-appsec @bitwarden/dept-bre
+**/*.dockerignore @bitwarden/team-appsec @bitwarden/dept-bre
+**/docker-compose.yml @bitwarden/team-appsec @bitwarden/dept-bre
+**/entrypoint.sh @bitwarden/team-appsec @bitwarden/dept-bre
 
 ## BRE team owns these workflows ##
 .github/workflows/publish.yml @bitwarden/dept-bre