Unable to run lambda in docker image-CodePudding

I currently have an AWS Lambda that I've been working on that I would like to build and run from a docker image. I'm using the aws-lambda-node:16 image as my base image. But I can't seem to get the docker image to properly pick up the handler from my javascript file to run the lambda.

I have tested the lambda's execution outside the docker image with lambda-local and the lambda runs fine in my local environment. It just seems that something is up with the docker container.

My Dockerfile:

FROM amazon/aws-lambda-nodejs:16

COPY dist/blacklist-ips/app.js ${LAMBDA_TASK_ROOT}
COPY package.json pnpm-lock.yaml ${LAMBDA_TASK_ROOT}/

RUN npm i -g pnpm && pnpm install --production

CMD [ "app.handle" ]

My Webpack config:

import { resolve } from 'path';

import { default as webpack } from 'webpack';

import TerserPlugin from 'terser-webpack-plugin';

const config = (env: any, argv: any): webpack.Configuration => {
  return {
    mode: env.production ? 'production' : 'development',
    entry: {
      'blacklist-ips': resolve(__dirname, 'src', 'blacklist-ips', 'blacklist-ips.ts')
    },
    output: {
      path: resolve(__dirname, 'dist'),
      filename: '[name]/app.js',
      libraryTarget: 'commonjs2'
    },
    devtool: false,
    target: 'node',
    externals: [
      '@aws-sdk/client-cloudwatch-logs',
      '@aws-sdk/client-wafv2',
      'luxon',
      'tslib'
    ],
    resolve: {
      extensions: [ '.ts', '.js', '.json' ]
    },
    module: {
      rules: [
        {
          test: /.ts$/,
          loader: 'ts-loader'
        }
      ]
    },
    optimization: {
      minimize: env.production,
      minimizer: [
        new TerserPlugin({
          parallel: true,
          terserOptions: {
            mangle: false
          }
        })
      ]
    }
  }
}

export default config;

My handler function is being properly exported in the webpack bundle:

const handler = async () => {
  ...lambda logic
};
exports.handler = handler;

I'm stumped as to why it's not working correctly with the Docker container...

CodePudding user response：

Your CMD is app.handle while your function name is handler. You should change the CMD to be app.handler.