Update .env for new server and agent image versions; enhance docker-compose.yml with dynamic agent names and extra hosts; add troubleshooting guide for port allocation issues.

docker-compose.yml

@@ -15,7 +15,7 @@ services:
       - '/teamcity/logs:/opt/teamcity/logs'
     networks:
       - devops
-    image: jetbrains/teamcity-server
+    image: jetbrains/teamcity-server:${SERVER_IMAGE_VERSION}
     
   teamcity-agent-1:
     restart: always
@@ -23,10 +23,14 @@ services:
     environment:
       - 'SERVER_URL=teamcity-server:8111'
       - DOCKER_IN_DOCKER=start
+      - AGENT_NAME=${AGENT_NAME_1}
     user: root
     privileged: true
     networks:
       - devops
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+      - "phoenixDBE2E:host-gateway"
     volumes:
       - '/teamcity/agent:/teamcity_agent/conf'
       - '/var/run/docker.sock:/var/run/docker.sock'
@@ -42,10 +46,14 @@ services:
     environment:
       - 'SERVER_URL=teamcity-server:8111'
       - DOCKER_IN_DOCKER=start
+      - AGENT_NAME=${AGENT_NAME_2}
     user: root
     privileged: true
     networks:
       - devops
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+      - "phoenixDBE2E:host-gateway"
     volumes:
       - '/teamcity/agent2:/teamcity_agent/conf'
       - '/var/run/docker.sock:/var/run/docker.sock'
@@ -62,10 +70,14 @@ services:
     environment:
       - 'SERVER_URL=teamcity-server:8111'
       - DOCKER_IN_DOCKER=start
+      - AGENT_NAME=${AGENT_NAME_3}
     user: root
     privileged: true
     networks:
       - devops
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+      - "phoenixDBE2E:host-gateway"
     volumes:
       - '/teamcity/agent3:/teamcity_agent/conf'
       - '/var/run/docker.sock:/var/run/docker.sock'