Find non-secret .env environment files, esp for testing

Find and `source` .env environment files even if
they are not flagged for encryption with the
".secret" suffix.

This makes it possible to have a .env.test file
for example to be sourced when DOTENV=test.

ixc_django_docker/bin/entrypoint.sh

@@ -129,7 +129,7 @@ if [[ -n "$TRANSCRYPT_PASSWORD" ]]; then
 fi
 
 # Source global, environment and local dotenv files, if decrypted.
-for dotenv in base "$DOTENV.secret" local; do
+for dotenv in base "$DOTENV" "$DOTENV.secret" local; do
 	DOTENV_FILE="$PROJECT_DIR/.env.$dotenv"
 	if [[ -f "$DOTENV_FILE" ]]; then
 		echo "Sourcing DOTENV file: $DOTENV_FILE"