fix: add OpenCode cache volume for version file persistence

[thesobercoder]

Problem

After PR #460 was merged, OpenCode CLI was failing with:

EACCES: permission denied, open '/home/automaker/.cache/opencode/version'

OpenCode uses three XDG directories but PR #460 only mounted two:

• ~/.local/share/opencode ✅ Mounted
• ~/.config/opencode ✅ Mounted
• ~/.cache/opencode ❌ Missing - stores version file

Solution

• Add automaker-opencode-cache volume mount for ~/.cache/opencode
• Add entrypoint script handling to set correct ownership/permissions on the cache directory

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[gemini-code-assist]

Summary of Changes

Hello @thesobercoder, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical issue where the OpenCode CLI was failing due to a missing cache volume, leading to permission errors when trying to access its version file. The solution involves extending the Docker Compose configuration to include the previously overlooked cache directory as a persistent volume and updating the entrypoint script to correctly initialize its permissions. This ensures the OpenCode CLI can operate without encountering file access problems within the containerized environment.

Highlights

• OpenCode Cache Volume: A new named volume, automaker-opencode-cache, has been added to docker-compose.yml to persist the ~/.cache/opencode directory. This resolves an EACCES permission denied error encountered by the OpenCode CLI after a previous PR, which failed because the cache directory was not mounted.
• Entrypoint Script Updates: The docker-entrypoint.sh script has been updated to ensure the ~/.cache/opencode directory is created if it doesn't exist and that it has the correct ownership (automaker:automaker) and permissions (700) to prevent future permission issues.

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[gemini-code-assist]

Code Review

This pull request correctly addresses the EACCES error by adding a persistent volume for the OpenCode cache directory. The changes in docker-compose.yml to add the volume and the mount are correct. The docker-entrypoint.sh script is also updated to ensure the directory has the right permissions. I've added one suggestion to simplify the entrypoint script by removing a redundant check, which also helps with maintainability by reducing code duplication.

[gemini-code-assist]

The if [ ! -d ... ] check is redundant because mkdir -p is idempotent and will not return an error if the directory already exists. You can simplify this block by removing the conditional check. This pattern is repeated multiple times in this script, and applying this simplification would improve readability and maintainability.

Suggested change

	if [ ! -d "/home/automaker/.cache/opencode" ]; then
	mkdir -p /home/automaker/.cache/opencode
	fi
	mkdir -p /home/automaker/.cache/opencode