Switch to Buildah for container builds (#51)

## Summary
- Replace Docker with Buildah for container image builds
- No Docker socket required - buildah is daemonless
- Cleaner security model (no privileged containers or socket mounting)
- Remove Docker-related security context from deployment

## Changes
- Update Dockerfile to install buildah/podman instead of docker-cli
- Configure buildah storage with overlay driver and fuse-overlayfs
- Update composite action to use `buildah bud` and `buildah push`
- Add `imagePullPolicy: Always` to ensure fresh image pulls
- Update test workflow to verify buildah/podman

## Testing
- [ ] Runner pod starts successfully
- [ ] Buildah is available in runner
- [ ] Test workflow verifies buildah/podman versions
- [ ] Container build workflow builds and pushes to zot

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Reviewed-on: https://forge.tail8d86e.ts.net/eblume/blumeops/pulls/51

ansible/playbooks/indri.yml

@@ -61,6 +61,23 @@
       no_log: true
       tags: [forgejo]
 
+    # Forgejo runner token (for indri-based runner)
+    - name: Fetch forgejo runner token
+      ansible.builtin.command:
+        cmd: op --vault vg6xf6vvfmoh5hqjjhlhbeoaie item get w3663ffnvkewbftncqxtcpeavy --fields runner_reg --reveal
+      delegate_to: localhost
+      register: _forgejo_runner_token
+      changed_when: false
+      no_log: true
+      check_mode: false
+      tags: [forgejo_runner]
+
+    - name: Set forgejo runner token fact
+      ansible.builtin.set_fact:
+        forgejo_runner_token: "{{ _forgejo_runner_token.stdout }}"
+      no_log: true
+      tags: [forgejo_runner]
+
   roles:
     - role: alloy
       tags: alloy
@@ -82,3 +99,5 @@
       tags: plex_metrics
     - role: tailscale_serve
       tags: tailscale-serve
+    - role: forgejo_runner
+      tags: forgejo_runner

ansible/roles/forgejo_runner/defaults/main.yml

@@ -0,0 +1,23 @@
+---
+# Forgejo Runner - host execution mode
+#
+# The runner daemon runs directly on indri and executes jobs on the host.
+# This avoids container networking complexity since it can reach Forgejo
+# at localhost:3001 directly.
+
+forgejo_runner_binary: /Users/erichblume/code/3rd/forgejo-runner/forgejo-runner
+forgejo_runner_data_dir: /Users/erichblume/.forgejo-runner
+forgejo_runner_config_dir: /Users/erichblume/.config/forgejo-runner
+forgejo_runner_log_dir: /Users/erichblume/Library/Logs
+
+# Runner registration - use localhost since we're running on indri
+forgejo_runner_instance_url: "http://localhost:3001"
+forgejo_runner_name: "indri-host-runner"
+
+# Labels format for host execution: label:host
+# Jobs run directly on the host, not in containers
+forgejo_runner_labels: "ubuntu-latest:host,ubuntu-22.04:host"
+
+# Runner config
+forgejo_runner_capacity: 2
+forgejo_runner_timeout: 3h

ansible/roles/forgejo_runner/handlers/main.yml

@@ -0,0 +1,7 @@
+---
+- name: Restart forgejo-runner
+  listen: Restart forgejo-runner
+  ansible.builtin.shell: |
+    launchctl unload ~/Library/LaunchAgents/mcquack.forgejo-runner.plist 2>/dev/null || true
+    launchctl load ~/Library/LaunchAgents/mcquack.forgejo-runner.plist
+  changed_when: true

ansible/roles/forgejo_runner/tasks/main.yml

@@ -0,0 +1,57 @@
+---
+# Forgejo Runner - host execution mode
+#
+# The runner daemon runs directly on indri using a locally compiled binary.
+# Jobs execute on the host, reaching Forgejo at localhost:3001.
+
+- name: Ensure forgejo-runner directories exist
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: directory
+    mode: '0755'
+  loop:
+    - "{{ forgejo_runner_data_dir }}"
+    - "{{ forgejo_runner_config_dir }}"
+
+- name: Deploy forgejo-runner config
+  ansible.builtin.template:
+    src: config.yaml.j2
+    dest: "{{ forgejo_runner_config_dir }}/config.yaml"
+    mode: '0644'
+  notify: Restart forgejo-runner
+
+- name: Check if runner is registered
+  ansible.builtin.stat:
+    path: "{{ forgejo_runner_data_dir }}/.runner"
+  register: forgejo_runner_registered
+
+- name: Register runner with Forgejo
+  ansible.builtin.command:
+    cmd: >
+      {{ forgejo_runner_binary }} register
+      --instance "{{ forgejo_runner_instance_url }}"
+      --token "{{ forgejo_runner_token }}"
+      --name "{{ forgejo_runner_name }}"
+      --labels "{{ forgejo_runner_labels }}"
+      --no-interactive
+    chdir: "{{ forgejo_runner_data_dir }}"
+  when: not forgejo_runner_registered.stat.exists
+  changed_when: true
+
+- name: Deploy forgejo-runner launchd plist
+  ansible.builtin.template:
+    src: forgejo-runner.plist.j2
+    dest: ~/Library/LaunchAgents/mcquack.forgejo-runner.plist
+    mode: '0644'
+  notify: Restart forgejo-runner
+
+- name: Check if forgejo-runner is loaded
+  ansible.builtin.command: launchctl list mcquack.forgejo-runner
+  register: forgejo_runner_launchctl_check
+  changed_when: false
+  failed_when: false
+
+- name: Load forgejo-runner if not loaded
+  ansible.builtin.command: launchctl load ~/Library/LaunchAgents/mcquack.forgejo-runner.plist
+  when: forgejo_runner_launchctl_check.rc != 0
+  changed_when: true

ansible/roles/forgejo_runner/templates/config.yaml.j2

@@ -0,0 +1,13 @@
+# {{ ansible_managed }}
+log:
+  level: info
+
+runner:
+  file: {{ forgejo_runner_data_dir }}/.runner
+  capacity: {{ forgejo_runner_capacity }}
+  timeout: {{ forgejo_runner_timeout }}
+
+# Even in host execution mode, some actions run in containers.
+# Use host networking so containers can access localhost services.
+container:
+  network: "host"

ansible/roles/forgejo_runner/templates/forgejo-runner.plist.j2

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- {{ ansible_managed }} -->
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Label</key>
+	<string>mcquack.forgejo-runner</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>{{ forgejo_runner_binary }}</string>
+		<string>daemon</string>
+		<string>--config</string>
+		<string>{{ forgejo_runner_config_dir }}/config.yaml</string>
+	</array>
+	<key>WorkingDirectory</key>
+	<string>{{ forgejo_runner_data_dir }}</string>
+	<key>EnvironmentVariables</key>
+	<dict>
+		<key>PATH</key>
+		<string>/Users/erichblume/.local/share/mise/shims:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
+		<key>HOME</key>
+		<string>/Users/erichblume</string>
+	</dict>
+	<key>RunAtLoad</key>
+	<true/>
+	<key>KeepAlive</key>
+	<true/>
+	<key>StandardOutPath</key>
+	<string>{{ forgejo_runner_log_dir }}/mcquack.forgejo-runner.out.log</string>
+	<key>StandardErrorPath</key>
+	<string>{{ forgejo_runner_log_dir }}/mcquack.forgejo-runner.err.log</string>
+</dict>
+</plist>