fix docker, add base routing, header + drawer

frontend/src/pages/Home.tsx

@@ -0,0 +1,14 @@
+import { Container, Typography, Button } from "@mui/material";
+
+export default function Home() {
+  return (
+    <Container style={{ textAlign: "center", marginTop: "4rem" }}>
+      <Typography variant="h4" gutterBottom>
+        🚀 Hello MUI + React!
+      </Typography>
+      <Button variant="contained" color="primary">
+        Klick mich!
+      </Button>
+    </Container>
+  );
+}