Install docker compose plugin in gVisor's dind image.

PiperOrigin-RevId: 786862604

Author: milantracy

images/basic/docker/Dockerfile

@@ -8,7 +8,7 @@ RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings
   echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
   $(. /etc/os-release && echo "$VERSION_CODENAME") stable" > /etc/apt/sources.list.d/docker.list && \
   apt-get update && \
-  apt-get install -qqy docker-ce=5:27.5.1-1~ubuntu.24.04~noble docker-ce-cli=5:27.5.1-1~ubuntu.24.04~noble containerd.io docker-buildx-plugin iproute2
+  apt-get install -qqy docker-ce=5:27.5.1-1~ubuntu.24.04~noble docker-ce-cli=5:27.5.1-1~ubuntu.24.04~noble containerd.io docker-buildx-plugin docker-compose-plugin iproute2
 
 COPY start-dockerd.sh .
 CMD /start-dockerd.sh