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node.js - 无法在 aws lambda 中为 node-alpine 创建 docker

问题描述

我在尝试基于节点 js 打字稿图像（NestJs）为 aws lambda 创建 docker 图像时遇到以下错误，当我使用带有处理程序函数的示例 app.js 文件时也会发生此错误

internal/modules/cjs/loader.js:905
  throw err;
  ^

Error: Cannot find module '/function/main.handler'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)
    at Function.Module._load (internal/modules/cjs/loader.js:746:27)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
    at internal/main/run_main_module.js:17:47 {
  code: 'MODULE_NOT_FOUND',
  requireStack: []

我的运行命令：

docker run --rm -p 9001:8080 lambda-test:latest

ARG FUNCTION_DIR="/function"

#*****************************************************************************
#  Builder Stage
#****************************************************************************/
FROM node:14-alpine AS builder

# Include global arg in this stage of the build
ARG FUNCTION_DIR

# The working directory is where "npm install" created the node_modules folder.
WORKDIR ${FUNCTION_DIR}

# Install aws-lambda-cpp build dependencies. aws-lambda-cpp is used by aws-lambda-ric which is a
# node-gyp compiled dependency. Find it in package.json.
# See the Node.js example at https://github.com/aws/aws-lambda-nodejs-runtime-interface-client

RUN apk add --no-cache \
    libstdc++ \
    build-base \
    libtool \
    autoconf \
    automake \
    libexecinfo-dev \
    make \
    cmake \
    libcurl \
    python3


RUN mkdir -p ${FUNCTION_DIR}
COPY . ${FUNCTION_DIR}

# Install the AWS Lambda Runtime Interface Client (RIC) that is only required within this Docker container (not in package.json on development machine).
# It helps AWS to run the Lambda function code that autoiXpert provides.
RUN npm install
RUN npm install aws-lambda-ric
RUN npx tsc
RUN npm prune --production
#*****************************************************************************
#  Production Stage
#****************************************************************************/
FROM node:14-alpine

# Include global arg in this stage of the build
ARG FUNCTION_DIR

# The working directory is where "npm install" created the node_modules folder.
WORKDIR ${FUNCTION_DIR}

# If this directory does not exist, lambda shows an annoying warning.
RUN mkdir -p /opt/extensions

COPY --from=builder ${FUNCTION_DIR}/node_modules ${FUNCTION_DIR}/node_modules
COPY --from=builder ${FUNCTION_DIR}/package*.json ${FUNCTION_DIR}
COPY --from=builder ${FUNCTION_DIR}/dist/src* ${FUNCTION_DIR}

CMD [ "main.handler" ]

所有文件位置正确

当我使用 aws 基本图像时，它的效果很好，但图像大小约为 800mb，alpine 为 300mb

标签： node.jsdockerlambdanestjs

解决方案

您错过ENTRYPOINT ["/usr/local/bin/npx", "aws-lambda-ric"]了 Dockerfile 的最后阶段。

Imagenode:14-alpine的默认 ENTRY_POINT 是

#!/bin/sh
set -e

if [ "${1#-}" != "${1}" ] || [ -z "$(command -v "${1}")" ]; then
  set -- node "$@"
fi

exec "$@"

所以CMD [ "main.handler" ]相当于node main.handler，这导致Error: Cannot find module '/function/main.handler'。

要解决此问题，您应该将入口点更改为aws-lambda-ricwith

ENTRYPOINT ["/usr/local/bin/npx", "aws-lambda-ric"]

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