【webpack】【pug】webpack-dev-serverでimgタグのファイルを呼び出せない

Question

webpackとpugを組み合わせた開発環境を作っています。
pugのソースの中にimgタグが入っているのですが、webpack-dev-serverで開発環境を立ち上げるとnot-foundになってしまいます。
どの様に設定すればよろしいでしょうか？

ソース

npm

package.json

{
  "name": "product",
  "version": "1.0.0",
  "description": "",
  "main": "webpack.config.js",
  "scripts": {
    "start": "npm run dev",
    "dev": "webpack-dev-server",
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "vue": "^2.6.2",
    "vue-property-decorator": "^7.3.0",
    "vue-router": "^3.0.2"
  },
  "devDependencies": {
    "autoprefixer": "^9.4.7",
    "clean-webpack-plugin": "^1.0.1",
    "css-loader": "^2.1.0",
    "file-loader": "^3.0.1",
    "html-webpack-plugin": "^3.2.0",
    "postcss-loader": "^3.0.0",
    "pug": "^2.0.3",
    "pug-plain-loader": "^1.0.0",
    "raw-loader": "^1.0.0",
    "rfs": "^8.0.1",
    "stylus": "^0.54.5",
    "stylus-loader": "^3.0.2",
    "stylus-normalize": "^3.0.3",
    "ts-loader": "^5.3.3",
    "typescript": "^3.3.1",
    "url-loader": "^1.1.2",
    "vue-class-component": "^6.3.2",
    "vue-loader": "^15.6.2",
    "vue-style-loader": "^4.1.2",
    "vue-template-compiler": "^2.6.2",
    "webpack": "^4.29.1",
    "webpack-cli": "^3.2.3",
    "webpack-dev-server": "^3.1.14"
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
}

コマンド

下記コマンドで、webpack-dev-serverを立ち上げます。

$ npm start

webpack-config

'use strict'

const path = require('path')
const webpack = require('webpack')

const vueLoaderPlugin = require('vue-loader/lib/plugin')
const htmlWebpackPlugin = require('html-webpack-plugin')
const cleanWebpackPlugin = require('clean-webpack-plugin')

module.exports = {

  mode: 'development',

  entry: {
    build: './src/index.ts'
  },

  output: {
    path: path.resolve(__dirname, './dist'),
    filename: '[name].js'
  },

  devServer: {
    contentBase: path.resolve(__dirname, 'public'),
    watchContentBase: true
  },

  module: {
    rules: [{
        test: /.vue$/,
        loader: 'vue-loader'
      },
      {
        test: /.tsx?$/,
        loader: 'ts-loader',
        exclude: /node_modules/,
        options: {
          appendTsSuffixTo: [/.vue$/],
        }
      },
      {
        test: /.css$/,
        use: [
          'style-loader',
          'css-loader'
        ]
      },
      {
        test: /.pug$/,
        oneOf: [{
            resourceQuery: /^?vue/,
            use: [
              'pug-plain-loader'
            ]
          },
          {
            use: [
              'raw-loader',
              'pug-plain-loader'
            ]
          }
        ]
      },
      {
        test: /.styl(us)?$/,
        exclude: /node_modules/,
        use: [{
            loader: 'vue-style-loader'
          },
          {
            loader: 'css-loader'
          },
          {
            loader: 'postcss-loader',
            options: {
              plugins: [
                require('autoprefixer')({
                  grid: true,
                  browsers: [
                    "> 1%",
                    "last 2 versions",
                    "not ie <= 8"
                  ]
                })
              ]
            },
          },
          {
            loader: 'stylus-loader'
          }
        ]
      },
      {
        test: /.(png|jpe?g|gif|svg)(?.*)?$/,
        loader: 'url-loader',
        options: {
          limit: 10000
        }
      },
    ]
  },
  resolve: {
    extensions: ['.ts', '.js', '.vue', '.json'],
    alias: {
      'vue$': 'vue/dist/vue.esm.js'
    }
  },
  plugins: [
    // new cleanWebpackPlugin(['dist']),
    new htmlWebpackPlugin({
      title: 'INDEX',
      template: './src/index.pug'
    }),
    new vueLoaderPlugin()
  ]
}

pug

index.pugと同じディレクトリに、./assets/img/profile_image.jpgというファイルを置いています。

doctype html
html(lang='jp' dir='ltr')
  head
    meta(charset='utf-8') 
    title title
  body
    img(src="./assets/img/profile_image.jpg")