update dockerfile to add node and prettier

Dockerfile

@@ -38,6 +38,8 @@ RUN apt-get update && apt-get install -y \
         git \
         sqlite3 \
         ssh \
+        nodejs \
+        npm \
     && rm -rf /var/lib/apt/lists/*
 
 ## Install pipenv
@@ -56,6 +58,10 @@ WORKDIR /home/cc
 USER cc:cc
 RUN mkdir .ssh && chmod 0700 .ssh
 
+# Set up our node environment
+RUN npm install express prettier
+COPY prettier-server.js .
+
 # Configure git for tests
 RUN git config --global user.email 'app@docker-container' \
     && git config --global user.name 'App DockerContainer' \

docker-compose.yml

@@ -11,7 +11,7 @@ services:
 
   app:
     build: .
-    command: "./manage.py runserver 0.0.0.0:${PORT_APP}"
+    command: "bash -c 'node prettier-server.js & ./manage.py runserver 0.0.0.0:${PORT_APP}'"
     environment:
       - DJANGO_SETTINGS_MODULE=${DOCKER_DJANGO_SETTINGS_MODULE}
     ports:

prettier-server.js

@@ -0,0 +1,21 @@
+const express = require("express");
+const prettier = require("prettier");
+
+const app = express();
+
+app.use(express.text({ limit: "10mb", type: "*/*" }));
+
+app.post("/", async (req, res) => {
+  try {
+    const formatted = await prettier.format(req.body, { parser: "html" });
+    res.type("text/html").send(formatted);
+  } catch (error) {
+    res.status(500).type("text/plain").send(`Prettier error: ${error.message}`);
+  }
+});
+
+const server = app.listen(3000);
+
+process.on("SIGINT", () => {
+  server.close(() => process.exit(0));
+});