diff --git a/pkg/universe.dagger.io/docker/run.cue b/pkg/universe.dagger.io/docker/run.cue
index 0eedc34d..57a833b1 100644
--- a/pkg/universe.dagger.io/docker/run.cue
+++ b/pkg/universe.dagger.io/docker/run.cue
@@ -79,7 +79,7 @@ import (
 
 	// Working directory for the command
 	// Example: "/src"
-	workdir: string | *"/"
+	workdir: string
 
 	// Username or UID to ad
 	// User identity for this command
diff --git a/pkg/universe.dagger.io/docker/test/docker.bats b/pkg/universe.dagger.io/docker/test/docker.bats
index 2ab65b5d..8b7abe8c 100644
--- a/pkg/universe.dagger.io/docker/test/docker.bats
+++ b/pkg/universe.dagger.io/docker/test/docker.bats
@@ -17,4 +17,5 @@ setup() {
     dagger up ./run-script-test.cue
     dagger up ./run-export-file-test.cue
     dagger up ./run-export-directory-test.cue
+    dagger up ./image-config-test.cue
 }
diff --git a/pkg/universe.dagger.io/docker/test/image-config-test.cue b/pkg/universe.dagger.io/docker/test/image-config-test.cue
new file mode 100644
index 00000000..aa162362
--- /dev/null
+++ b/pkg/universe.dagger.io/docker/test/image-config-test.cue
@@ -0,0 +1,80 @@
+package docker
+
+import (
+	"dagger.io/dagger"
+	"dagger.io/dagger/engine"
+	"universe.dagger.io/docker"
+)
+
+dagger.#Plan & {
+	actions: {
+		build: engine.#Dockerfile & {
+			source: engine.#Scratch
+			dockerfile: contents: """
+				FROM alpine:3.15.0
+				RUN echo -n 'not hello from dagger' > /dagger.txt
+				RUN echo '#!/bin/sh' > /bin/dagger
+				ENV HELLO_FROM=dagger
+				RUN echo 'echo -n "hello from $HELLO_FROM" > /dagger.txt' >> /bin/dagger
+				RUN chmod +x /bin/dagger
+				WORKDIR /bin
+				CMD /bin/dagger
+				"""
+		}
+		myimage: docker.#Image & {
+			rootfs: build.output
+			config: build.config
+		}
+		run: docker.#Run & {
+			image: myimage
+			cmd: {
+				name: "ls"
+			}
+			export: files: {
+				"/dagger.txt": _ & {
+					contents: "not hello from dagger"
+				}
+				"/bin/dagger": _ & {
+					contents: """
+						#!/bin/sh
+						echo -n "hello from $HELLO_FROM" > /dagger.txt
+						
+						"""
+				}
+			}
+		}
+		verify_cmd_is_run: docker.#Run & {
+			image: myimage
+			export: files: "/dagger.txt": _ & {
+				contents: "hello from dagger"
+			}
+		}
+		verify_env_is_overridden: docker.#Run & {
+			image: myimage
+			export: files: "/dagger.txt": _ & {
+				contents: "hello from europa"
+			}
+			env: HELLO_FROM: "europa"
+		}
+
+		verify_working_directory: docker.#Run & {
+			image: myimage
+			script: #"""
+				pwd > dir.txt
+				"""#
+			export: files: "/bin/dir.txt": _ & {
+				contents: "/bin\n"
+			}
+		}
+		verify_working_directory_is_overridden: docker.#Run & {
+			image:   myimage
+			workdir: "/"
+			script: #"""
+				pwd > dir.txt
+				"""#
+			export: files: "/dir.txt": _ & {
+				contents: "/\n"
+			}
+		}
+	}
+}