Rewrite the runbooks to work for contests with internet access

Author: vmcj

icpc-wf/ansible/group_vars/all/all.yml

@@ -2,7 +2,7 @@
 DJ_DIR: /opt/domjudge
 
 # Branch to checkout and use.
-DJ_BRANCH: wf2020
+DJ_BRANCH: main
 
 # Server VLAN IP prefix.
 SERVER_IP_PREFIX: 10.3.3
@@ -37,7 +37,8 @@ PHP_MAX_FILE_UPLOADS: 101
 
 # Git repo URL
 DJ_GIT_HOST: "{{MAIN_ADMIN_IP}}"
-DJ_GIT_REPO: "domjudge@{{DJ_GIT_HOST}}:domjudge"
+#DJ_GIT_REPO: "domjudge@{{DJ_GIT_HOST}}:domjudge"
+DJ_GIT_REPO: "https://github.com/domjudge/domjudge.git"
 DJ_GIT_REPO_SCRIPTS: "domjudge@{{DJ_GIT_HOST}}:domjudge-scripts-bare"
 
 PHPSTORM_VERSION: 2021.2