fix: Add Dendrite to docker-compose stack (#619)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/env.sh

@@ -67,6 +67,18 @@ export WOODPECKER_REPO_ID="${WOODPECKER_REPO_ID:-}"
 export WOODPECKER_SERVER="${WOODPECKER_SERVER:-http://localhost:8000}"
 export CLAUDE_TIMEOUT="${CLAUDE_TIMEOUT:-7200}"
 
+# Matrix homeserver: inside compose Dendrite is at http://dendrite:8008,
+# on bare metal it defaults to http://localhost:8008.
+if [ -z "${MATRIX_HOMESERVER:-}" ]; then
+  if [ "${DISINTO_CONTAINER:-}" = "1" ]; then
+    export MATRIX_HOMESERVER="http://dendrite:8008"
+  else
+    export MATRIX_HOMESERVER="http://localhost:8008"
+  fi
+else
+  export MATRIX_HOMESERVER
+fi
+
 # Shared log helper
 log() {
   printf '[%s] %s\n' "$(date -u '+%Y-%m-%d %H:%M:%S UTC')" "$*"

lib/matrix_listener.service

@@ -1,3 +1,6 @@
+# Legacy systemd unit for bare-metal deployments (disinto init --bare).
+# In compose mode, the matrix listener runs inside the agent container
+# as a background process — see docker/agents/entrypoint.sh.
 [Unit]
 Description=Disinto Matrix Listener
 After=network.target dendrite.service

lib/matrix_listener.sh

@@ -20,14 +20,19 @@ set -euo pipefail
 # Load shared environment
 source "$(dirname "$0")/../lib/env.sh"
 
-# Pidfile guard — prevent duplicate listener processes
+# Pidfile guard — prevent duplicate listener processes.
+# Inside a container the PID file from a previous run is stale (container
+# restart resets the PID namespace), so we only honour it when the recorded
+# PID is still alive.
 PIDFILE="/tmp/matrix-listener.pid"
 if [ -f "$PIDFILE" ]; then
-  OLD_PID=$(cat "$PIDFILE")
-  if kill -0 "$OLD_PID" 2>/dev/null; then
+  OLD_PID=$(cat "$PIDFILE" 2>/dev/null || true)
+  if [ -n "$OLD_PID" ] && kill -0 "$OLD_PID" 2>/dev/null; then
     echo "Listener already running (PID $OLD_PID)" >&2
     exit 0
   fi
+  # Stale pidfile (previous container run or crashed process) — remove it
+  rm -f "$PIDFILE"
 fi
 echo $$ > "$PIDFILE"
 trap 'rm -f "$PIDFILE"' EXIT