feat(ssl-manager.sh): add automatic .env.local file detection and variable export

Introduce a function to locate the .env.local file in the current or
parent directories, allowing for automatic environment variable export.
This change enhances the script's usability by eliminating the need for
manual environment variable setup, ensuring that necessary configurations
are loaded automatically. If the .env.local file is not found, a warning
is issued, alerting the user to potential configuration issues.

Author: kzndotsh

scripts/ssl-manager.sh

@@ -6,6 +6,28 @@
 # Single script to handle all SSL certificate operations
 # ============================================================================
 
+# find .env.local in current or parent dirs
+find_env_file() {
+  dir="$PWD"
+  while true; do
+    if [ -f "$dir/.env.local" ]; then
+      echo "$dir/.env.local"
+      return 0
+    fi
+    [ "$dir" = "/" ] && return 1
+    dir="$(dirname "$dir")"
+  done
+}
+
+if envfile=$(find_env_file); then
+  # automatically export all vars
+  set -o allexport
+  source "$envfile"
+  set +o allexport
+else
+  echo "warning: .env.local not found" >&2
+fi
+
 set -euo pipefail
 
 # Configuration
@@ -312,4 +334,4 @@ main() {
 }
 
 # Run main function
-main "$@"
+main "$@"