support buildx

.dockerignore

@@ -0,0 +1 @@
+build.sh

build.sh

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+GIT_REV=$(git log --pretty=format:'%h' -n 1)
+docker images | grep $GIT_REV
+if test $? == 0; then
+  exit
+fi
+
+docker buildx build . --tag workspace:$GIT_REV