Try to use custom Dockerfile

.github/workflows/it.yml

@@ -11,7 +11,8 @@ jobs:
     container: ubuntu:22.04
     services:
       lila:
-        image: ghcr.io/lichess-org/lila-docker:main
+        #image: ghcr.io/lichess-org/lila-docker:main
+        image: 'Dockerfile'
         options: --restart=always
 
     steps:

Dockerfile

@@ -0,0 +1,21 @@
+FROM ghcr.io/lichess-org/lila-docker:main
+
+RUN rm -rf /opt/java/openjdk
+
+RUN curl -L -o jdk.tgz https://download.java.net/java/GA/jdk23/3c5b90190c68498b986a97f276efd28a/37/GPL/openjdk-23_linux-$(uname -i)_bin.tar.gz
+RUN tar xzf jdk.tgz
+RUN mv jdk-23 /opt/java/openjdk
+
+ADD FastAutoStartRelayAgent.java .
+
+RUN javac --enable-preview --release 23 -d agentclasses FastAutoStartRelayAgent.java
+
+RUN printf 'Premain-Class: FastAutoStartRelayAgent \n\
+Can-Retransform-Classes: true \n\
+' >> agent.mf
+
+RUN jar --create --file=/FastAutoStartRelayAgent.jar --manifest=agent.mf -C agentclasses .
+
+
+ENV _JAVA_OPTIONS="--enable-preview -javaagent:/FastAutoStartRelayAgent.jar"
+