buildx

Dockerfile

@@ -14,9 +14,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     && rm -rf /var/lib/apt/lists/*
 
 # docker
+ENV DOCKER_BUILDKIT=1
 RUN apt-get update && apt-get install -y --no-install-recommends \
     docker-cli \
+    docker-buildx-plugin \
+    docker-compose-plugin \
     && rm -rf /var/lib/apt/lists/*
+RUN docker buildx create --use --name default-builder
 
 # check
 RUN git --version && \