remove hard requirement on ADMIN_PASS

and use the SSP default of 123 which triggers a runtime error message only if the admin page is actually used

docker-compose.yml

@@ -39,7 +39,6 @@ services:
       MYSQL_USER: silauth
       MYSQL_PASSWORD: silauth
       PROFILE_URL_FOR_TESTS: http://pwmanager.local/module.php/core/authenticate.php?as=ssp-hub
-      ADMIN_PASS: b
       SECRET_SALT: abc123
       IDP_NAME: x
     volumes:
@@ -282,7 +281,6 @@ services:
       - "8081:80"
     environment:
       ADMIN_EMAIL: "[email protected]"
-      ADMIN_PASS: "sp1"
       IDP_NAME: "NA"
       SECRET_SALT: "not-secret-h57fjemb&dn^nsJFGNjweJz1"
       SECURE_COOKIE: "false"
@@ -305,7 +303,6 @@ services:
       - "8082:80"
     environment:
       ADMIN_EMAIL: "[email protected]"
-      ADMIN_PASS: "sp2"
       IDP_NAME: "NA"
       SECRET_SALT: "h57fjemb&dn^nsJFGNjweJz2"
       SECURE_COOKIE: "false"
@@ -330,7 +327,6 @@ services:
       - local.env
     environment:
       ADMIN_EMAIL: "[email protected]"
-      ADMIN_PASS: sp3
       IDP_NAME: "NA"
       SECRET_SALT: h57fjemb&dn^nsJFGNjweJz3
       SECURE_COOKIE: "false"
@@ -351,7 +347,6 @@ services:
       - ./development/sp-local/metadata/saml20-idp-remote.php:/data/vendor/simplesamlphp/simplesamlphp/metadata/saml20-idp-remote.php
     environment:
       ADMIN_EMAIL: "[email protected]"
-      ADMIN_PASS: sp1
       IDP_NAME: THIS VARIABLE IS REQUIRED BUT PROBABLY NOT USED
       SECRET_SALT: NOT-a-secret-k49fjfkw73hjf9t87wjiw
       SECURE_COOKIE: "false"

dockerbuild/config/config.php

@@ -27,7 +27,6 @@
 
 try {
     // Required to be defined in environment variables
-    $ADMIN_PASS = Env::requireEnv('ADMIN_PASS');
     $SECRET_SALT = Env::requireEnv('SECRET_SALT');
     $IDP_NAME = Env::requireEnv('IDP_NAME');
 } catch (EnvVarNotFoundException $e) {
@@ -47,6 +46,7 @@
 // Defaults provided if not defined in environment
 $IDP_DISPLAY_NAME = Env::get('IDP_DISPLAY_NAME', $IDP_NAME);
 $BASE_URL_PATH = Env::get('BASE_URL_PATH', '/');
+$ADMIN_PASS = Env::get('ADMIN_PASS', '123');
 $ADMIN_EMAIL = Env::get('ADMIN_EMAIL', '[email protected]');
 $ADMIN_NAME = Env::get('ADMIN_NAME', 'SAML Admin');
 $SHOW_SAML_ERRORS = Env::get('SHOW_SAML_ERRORS', false);