无法将镜像部署到 kubernetes（打包结构问题）

Question

On successfully building using below dockerfile, I am unable to deploy my application on eks.

 FROM node:12 # Create app directory WORKDIR /usr/src/app COPY udagram-feed/package*.json./ RUN npm ci # Bundle app source COPY. . EXPOSE 8080 CMD [ "npm", "run", "prod" ]

on fetching logs from cluster, this is what i get:

 internal/modules/cjs/loader.js:960 throw err; ^ Error: Cannot find module '/usr/src/app/www/server.js' at Function.Module._resolveFilename (internal/modules/cjs/loader.js:957:15) at Function.Module._load (internal/modules/cjs/loader.js:840:27) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12) at internal/main/run_main_module.js:18:47 { code: 'MODULE_NOT_FOUND', requireStack: [] } npm ERR. code ELIFECYCLE npm ERR. errno 1 npm ERR: udagram-user@1.0.0 prod. `tsc && node./www/server.js` npm ERR. Exit status 1 npm ERR. npm ERR: Failed at the udagram-user@1.0.0 prod script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above. npm ERR! A complete log of this run can be found in: npm ERR! /root/.npm/_logs/2020-05-20T19_11_45_220Z-debug.log

running the image locally, i have the below file structure:

• Dockerfile
• node_modules
• package.json
• package-lock.json
• src

the src/ directory contains the serves.ts sequelize.ts and other files. Clearly there is no www/ directory. Why is kubernetes looking for files in this directory? Any help is appreciated. I have been stuck on this for days now, don't know what to do. For file structure, please see the github repo Github

Answer 1

First, your Dockerfile created a 1GB image. I modified it to create a 240MB image. This Dockerfile can be further optimized; you can refer here and here for examples on creating a multi-stage Dockerfile.:

FROM node:12-alpine 
# Create app directory
WORKDIR /usr/src/app
# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./
RUN apk add --no-cache --virtual .gyp \
        python \
        make \
        g++ \
    && npm ci \
    && apk del .gyp
# Bundle app source
COPY . .
EXPOSE 8080
CMD [ "npm", "run", "prod" ]

Here's the docker image sizes:

REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
udagram-feed-alpine                 latest              185478b5eabc        11 seconds ago      247MB
udagram-feed                        latest              fbf32e67d4fa        4 minutes ago       1.07GB

Secondly, your package.json is referring to ./www/server.js file