example nodejs project

examples/nodeproj/.eslintrc.json

@@ -0,0 +1,71 @@
+{
+  "env": {
+    "node": true,
+    "es6": true
+  },
+  "settings": {
+    "import/resolver": {
+      "node": {
+        "extensions": [".js", ".mjs", ".ts", ".cjs"]
+      }
+    }
+  },
+  "parser": "@typescript-eslint/parser",
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module",
+    "allowImportExportEverywhere": true
+  },
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/errors",
+    "plugin:import/warnings",
+    "plugin:import/typescript",
+    "plugin:promise/recommended",
+    "google",
+    "plugin:security/recommended"
+  ],
+  "plugins": ["promise", "security", "import"],
+  "overrides": [
+    {
+      "files": "public/**/*.min.js",
+      "env": {
+        "browser": true,
+        "node": false,
+        "es6": false
+      },
+      "parserOptions": {
+        "sourceType": "script"
+      },
+      "extends": ["plugin:compat/recommended"],
+      "plugins": [],
+      "rules": {
+        "no-var": ["off"]
+      }
+    }
+  ],
+  "rules": {
+    "security/detect-non-literal-fs-filename":["off"],
+    "security/detect-object-injection":["off"],
+    "camelcase": ["off"],
+    "no-console": ["off"],
+    "require-jsdoc": ["off"],
+    "one-var": ["off"],
+    "guard-for-in": ["off"],
+    "max-len": [
+      "warn",
+      {
+        "ignoreComments": true,
+        "ignoreTrailingComments": true,
+        "ignoreUrls": true,
+        "code": 200
+      }
+    ],
+    "indent": ["warn", 4],
+    "no-unused-vars": ["warn"],
+    "no-extra-semi": ["warn"],
+    "linebreak-style": ["error", "unix"],
+    "quotes": ["warn", "double"],
+    "semi": ["error", "always"]
+  }
+}

examples/nodeproj/.gitignore

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+charmander-local.rc
+.DS_Store
+*~
+*.seed
+*.log
+*.pid
+node_modules

examples/nodeproj/.home/.gitignore

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+*

examples/nodeproj/README.md

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+# How to run example
+
+
+
+```
+cp example.env local.env
+podman-compose build
+podman-compose run --rm --no-deps init
+podman-compose up
+```
+

examples/nodeproj/containers/node16-runtime/Dockerfile

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+FROM registry.fedoraproject.org/fedora-minimal:35
+ARG NODE_VER=16
+# microdnf -y module enable nodejs:${NODE_VER}
+RUN \
+  echo -e "[nodejs]\nname=nodejs\nstream=${NODE_VER}\nprofiles=\nstate=enabled\n" > /etc/dnf/modules.d/nodejs.module && \
+  microdnf -y install shadow-utils nodejs zopfli findutils busybox && \
+  microdnf clean all
+RUN adduser -d /app app && mkdir -p /app/code/.home && chown app:app -R /app/code && chmod 711 /app /app/code/.home && usermod -d /app/code/.home app
+ENV XDG_CONFIG_HOME=/app/code/.home
+ENV HOME=/app/code/.home
+WORKDIR /app/code
+

examples/nodeproj/docker-compose.yml

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+version: '3'
+volumes:
+  redis:
+services:
+  redis:
+    read_only: true
+    image: docker.io/redis:alpine
+    command: ["redis-server", "--appendonly", "yes", "--notify-keyspace-events", "Ex"]
+    volumes:
+    - redis:/data
+    tmpfs:
+    - /tmp
+    - /var/run
+    - /run
+  init:
+    read_only: true
+    userns_mode: keep-id
+    build:
+      context: ./containers/${NODE_IMG:-node16-runtime}
+    image: ${NODE_IMG:-node16-runtime}
+    env_file:
+    - local.env
+    volumes:
+    - .:/app/code
+    command: ["/bin/sh", "-c", "mkdir -p ~/; [ -d ./node_modules ] && echo '** node_modules exists' || npm install"]
+    tmpfs:
+    - /tmp
+    - /run
+  task:
+    extends:
+        service: init
+    command: ["npm", "run", "cli", "--", "task"]
+    links:
+    - redis
+    depends_on:
+    - redis
+  web:
+    extends:
+        service: init
+    command: ["npm", "run", "cli", "--", "web"]
+    ports:
+    - ${WEB_LISTEN_PORT:-3000}:3000
+    depends_on:
+    - redis
+    links:
+    - mongo
+

examples/nodeproj/example.env

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+REDIS_HOST=redis
+

examples/nodeproj/index.js

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+#! /usr/bin/env node
+"use strict";
+import {start} from "./lib";
+
+start();
+

examples/nodeproj/jsconfig.json

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+{
+    "compilerOptions": {
+        "target": "es2020",
+        "module": "es2020",
+        "moduleResolution": "node",
+        "allowSyntheticDefaultImports": true
+    },
+    "files": [
+        "index.js"
+    ],
+    "include": [
+        "lib/**/*.js"
+    ]
+}

examples/nodeproj/lib/commands/task.js

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+"use strict";
+import {proj} from "../proj";
+
+async function loop() {
+    const poped = await proj.predis.blpop("queue", 5);
+    const task_desc_s = poped[1];
+    let task_desc;
+    try {
+        task_desc = JSON.parse(task_desc_s);
+    } catch (e) {
+        proj.logger.exception(e);
+    }
+    proj.logger.info("got task "+task_desc.func);
+    const func = task_desc.func;
+    const args = task_desc.args;
+    if (typeof(proj.tasks[func])!="function") {
+        console.log(`task ${func} not found`);
+        process.exit(-1)
+    }
+    try {
+        await ((this.tasks[func])(...args));
+    } catch (e) {
+        console.exception(e);
+    }
+}
+
+export async function start() {
+    while(true) {
+        loop();
+    }
+}

examples/nodeproj/lib/commands/web.js

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+"use strict";
+import {proj} from "../proj";
+
+import http from "http";
+import express from "express";
+
+
+export async function start() {
+    const app = express();
+    app.use(proj.logger.express_logger);
+    const server = http.createServer(app);
+
+    // Routing
+    app.use(express.static(proj.config.basedir + "/public"));
+    app.get("/healthz", function(req, res) {
+        res.send("ok@"+Date.now());
+    });
+
+    server.listen(proj.config.LISTEN_PORT, proj.config.LISTEN_HOST, function() {
+        proj.logger.warn(`listening at port ${proj.config.LISTEN_PORT}`);
+    });
+}

examples/nodeproj/package.json

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+{
+  "name": "nodeproj",
+  "version": "0.0.1",
+  "description": "nodejs example project",
+  "exports": {
+    ".": "./index.js",
+    "./lib": "./lib"
+  },
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "cli": "nodemon -w lib -w index.js --es-module-specifier-resolution=node ./index.mjs"
+  },
+  "dependencies": {
+    "express": "~4.16.4",
+    "redis": "^3.1.2"
+  },
+  "private": true,
+  "author": "",
+  "license": "proprietary",
+  "devDependencies": {
+    "nodemon": "^2.0.14"
+  }
+}

examples/nodeproj/public/index.html

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+<!DOCTYPE html>
+<html>
+<head>
+<title>Vote</title>
+<link rel="stylesheet" href="https://unpkg.com/browse/normalize.css@8.0.1/normalize.css">
+<link rel="stylesheet" href="styles.css">
+</head>
+<body>
+<h1>This is a Heading</h1>
+<p>This is a paragraph.</p>
+</body>
+<script type="text/javascript" src="main.css"></script>
+<script type="text/javascript">
+//<![CDATA[
+console.log("loaded");
+//]]>
+</script>
+</html>

podman_compose.py

@@ -863,6 +863,10 @@ def container_to_args(compose, cnt, detached=True):
             raise TypeError("port should be either string or dict")
         podman_args.extend(["-p", port])
 
+    userns_mode = cnt.get("userns_mode", None)
+    if userns_mode is not None:
+        podman_args.extend(["--userns", userns_mode])
+
     user = cnt.get("user", None)
     if user is not None:
         podman_args.extend(["-u", user])