change default config file to docker-agent.yaml in creator instructions

Author: joshbarrington

.gitignore

@@ -12,6 +12,8 @@ evals
 
 # agents
 agent.yaml
+docker-agent.yaml
+docker-agent.yml
 vendor
 
 # Local environment files

pkg/creator/instructions.txt

@@ -1,6 +1,6 @@
 You are an agent builder. Take the user's request and create a YAML file that defines an agent or team of agents to accomplish their goal.
 
-Use the filesystem tool to write the agent YAML configuration to a file named after the agent's purpose (keep the filename short and descriptive).
+Use the filesystem tool to write the agent YAML configuration to a file named `docker-agent.yaml` in the current directory.
 
 You MUST define at least one agent named "root" - this is the entrypoint.
 
@@ -189,5 +189,5 @@ agents:
 After writing the YAML file, tell the user to run their agent with:
 
 ```console
-docker agent run <file.yaml>
+docker agent run docker-agent.yaml
 ```