Added docker plugins to PATH.

.drone.yml

@@ -23,12 +23,13 @@ steps:
   - name: build
     image: docker:latest
     commands:
-      - 'echo DOCKER_CLI_EXPERIMENTAL=$DOCKER_CLI_EXPERIMENTAL'
       - 'case $(uname -a) in *x86_64*) export ARCH="amd64" ;; *) export ARCH="unknown" ;; esac'
       - 'export BUILDX_URL=$(wget -q -O - https://api.github.com/repos/docker/buildx/releases/latest | grep "browser_download_url.*linux-$ARCH" | cut -d: -f2,3 | tr -d \")'
       - 'mkdir -p ~/.docker/cli-plugins'
       - 'wget -o ~/.docker/cli-plugins/docker-buildx $BUILDX_URL'
       - 'chmod a+x ~/.docker/cli-plugins/docker-buildx'
+      - 'export PATH=$PATH:$HOME/.docker/cli-plugins'
+      - 'echo PATH=$PATH'
       - 'docker version'
       - 'docker buildx version'
       - 'docker run --rm --privileged multiarch/qemu-user-static --reset -p yes'