Dockerfile best practice: add --no-install-recommends to apt-get install commands in agent-server Dockerfile

Context

The Dockerfile at openhands-agent-server/openhands/agent_server/docker/Dockerfile has two apt-get install commands that do not use the --no-install-recommends flag:

1. Docker Engine install (line ~380): apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
2. GitHub CLI install (line ~419): apt-get install -y gh

Best practice

It is a Docker best practice to use --no-install-recommends with apt-get install to avoid pulling in unnecessary recommended packages. This keeps the image lean and reduces unnecessary bloat.

Suggested change

Add --no-install-recommends to both apt-get install commands:

# Docker Engine
apt-get install -y --no-install-recommends docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# GitHub CLI
apt-get install -y --no-install-recommends gh

Acceptance criteria

• Both apt-get install commands in the agent-server Dockerfile use --no-install-recommends
• Docker image still builds and functions correctly

Open openhands-agent-server/openhands/agent_server/docker/Dockerfile and inspect the two apt-get install commands near lines 380 and 419. Add the requested flag to both, then build the agent-server Docker image to confirm it still builds and functions correctly.