stdlib: os package

Signed-off-by: Solomon Hykes <solomon@dagger.io>

stdlib/os/dir.cue

@@ -0,0 +1,44 @@
+package os
+
+import (
+	"dagger.io/dagger"
+	"dagger.io/dagger/op"
+)
+
+#Dir: {
+	from: dagger.#Artifact
+	path: string | *"/"
+
+	#up: [
+		op.#Load & {"from": from},
+		op.#Subdir & {
+			dir: path
+		},
+	]
+}
+
+#ReadDir: {
+	from: dagger.#Artifact
+	path: string
+
+	// Read the tree structure (not file contents)
+	read: tree: {
+		string// FIXME: only raw 'find' output for now
+		#up: [
+			op.#FetchContainer & {
+				ref: "alpine" // FIXME: use alpine or docker package
+			},
+			op.#Exec & {
+				mount: "/data": "from": from
+				args: [
+					"sh", "-c",
+					#"find /data | sed 's/^\/data//' > /export.txt"#,
+				]
+			},
+			op.#Export & {
+				source: "/export.txt"
+				format: "string"
+			},
+		]
+	}
+}