fiddle with docker

docker/app/entrypoint.sh

@@ -6,6 +6,8 @@ APP_TARGET=${APP_TARGET:-/var/www/html}
 APP_USER=${APP_USER:-www-data}
 APP_GROUP=${APP_GROUP:-www-data}
 SKIP_CODE_SYNC=${SKIP_CODE_SYNC:-0}
+DB_WAIT_TIMEOUT=${DB_WAIT_TIMEOUT:-60}
+REDIS_WAIT_TIMEOUT=${REDIS_WAIT_TIMEOUT:-60}
 
 sync_code() {
     if [[ "$SKIP_CODE_SYNC" == "1" ]]; then
@@ -42,9 +44,72 @@ prepare_storage() {
     fi
 }
 
+wait_for_service() {
+    local name="$1" host="$2" port="$3" timeout="$4"
+    local start
+    start=$(date +%s)
+
+    echo "[entrypoint] Waiting for ${name} at ${host}:${port} (timeout ${timeout}s)..."
+
+    while true; do
+        if exec 3<>"/dev/tcp/${host}/${port}" 2>/dev/null; then
+            exec 3>&- 3<&-
+            echo "[entrypoint] ${name} is available."
+            break
+        fi
+
+        if (( $(date +%s) - start >= timeout )); then
+            echo "[entrypoint] Timeout while waiting for ${name}." >&2
+            exit 1
+        fi
+
+        sleep 2
+    done
+}
+
+wait_for_dependencies() {
+    local should_wait_db="false"
+
+    case "${DB_CONNECTION:-sqlite}" in
+        mysql|mariadb)
+            should_wait_db="true"
+            DB_HOST=${DB_HOST:-mysql}
+            DB_PORT=${DB_PORT:-3306}
+            ;;
+        pgsql)
+            should_wait_db="true"
+            DB_HOST=${DB_HOST:-postgres}
+            DB_PORT=${DB_PORT:-5432}
+            ;;
+    esac
+
+    if [[ "${WAIT_FOR_DB:-$should_wait_db}" == "true" && "$should_wait_db" == "true" ]]; then
+        wait_for_service "database" "$DB_HOST" "$DB_PORT" "$DB_WAIT_TIMEOUT"
+    fi
+
+    local should_wait_redis="false"
+    if [[ "${QUEUE_CONNECTION:-}" == redis* ]]; then
+        should_wait_redis="true"
+    fi
+    if [[ "${CACHE_DRIVER:-}" == redis ]]; then
+        should_wait_redis="true"
+    fi
+    if [[ "${SESSION_DRIVER:-}" == redis ]]; then
+        should_wait_redis="true"
+    fi
+    if [[ "${FORCE_WAIT_FOR_REDIS:-false}" == "true" ]]; then
+        should_wait_redis="true"
+    fi
+
+    if [[ "${WAIT_FOR_REDIS:-$should_wait_redis}" == "true" && "$should_wait_redis" == "true" ]]; then
+        wait_for_service "redis" "${REDIS_HOST:-redis}" "${REDIS_PORT:-6379}" "$REDIS_WAIT_TIMEOUT"
+    fi
+}
+
 sync_code
 ensure_helper_scripts
 prepare_storage
+wait_for_dependencies
 
 cd "$APP_TARGET"
 exec "$@"