diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..88a84e5
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1 @@
+build.sh
diff --git a/build.sh b/build.sh
new file mode 100644
index 0000000..b40b009
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,7 @@
+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