feat(docker): add Docker support with configuration files and entrypoint scripts

.gitignore

@@ -33,6 +33,7 @@ yarn-error.log*
 # env files (can opt-in for committing if needed)
 .env*
 !.env.example
+!.env.docker.example
 
 # vercel
 .vercel
@@ -49,4 +50,4 @@ OPTIMIZATIONS.md
 .kilocode
 
 # Claude doesn't respect AGENTS.md and I don't want double AGENTS.md files on the repo.
-CLAUDE.md
+CLAUDE.md