From 846cf2fde756d029f2437de9daf44840ccab7de6 Mon Sep 17 00:00:00 2001
From: 12ww1160 <arne@confdroid.com>
Date: Tue, 2 Dec 2025 16:56:37 +0100
Subject: [PATCH] OP#176  fix envsubst

---
 start.sh | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/start.sh b/start.sh
index c27a0ba..c3cea0c 100755
--- a/start.sh
+++ b/start.sh
@@ -1,19 +1,17 @@
 #!/bin/bash
-
 set -e
 
-if [[ "${DATABASE_URL}" == "" ]]; then
-  echo 'Missing DATABASE_URL'
-  echo 'example -e DATABASE_URL="user=<db user> password=<db user password> host=<db host> port=<db port> database=<db name>"'
-  exit 1
+# Construct DATABASE_URL from individual vars if not set directly
+if [[ -z "${DATABASE_URL}" ]]; then
+  if [[ -z "${PG_USER}" || -z "${PG_PASSWORD}" || -z "${PG_HOST}" || -z "${PG_DBNAME}" ]]; then
+    echo "ERROR: DATABASE_URL not set and one of PG_USER/PG_PASSWORD/PG_HOST/PG_DBNAME missing"
+    exit 1
+  fi
+  export DATABASE_URL="postgresql://${PG_USER}:${PG_PASSWORD}@${PG_HOST}:${PG_PORT:-5432}/${PG_DBNAME}?sslmode=${PG_SSLMODE:-disable}"
+  echo "Constructed DATABASE_URL: ${DATABASE_URL}"
 fi
 
-trap shutdown INT
-
-function shutdown() {
-  pkill -SIGINT postgresql-prometheus-adapter
-}
-
+# Strip single quotes from defaults (Alpine bash keeps them)
 adapter_send_timeout=$(echo "${adapter_send_timeout:-'30s'}" | tr -d "'")
 web_listen_address=$(echo "${web_listen_address:-':9201'}" | tr -d "'")
 web_telemetry_path=$(echo "${web_telemetry_path:-'/metrics'}" | tr -d "'")