How to config karma with puppeter in docker?

I need puppeter to test some specifics pdf cenarios and stuffs.

currently my karmaConfig is:

module.exports = function (config) {
const process = require("process");
process.env.CHROME_BIN = require("puppeteer").executablePath();
config.set({
basePath: "",
frameworks: ["jasmine", "@angular-devkit/build-angular"],
plugins: [
require("karma-jasmine"),
require("karma-chrome-launcher"),
require("karma-jasmine-html-reporter"),
require("karma-junit-reporter"),
require("karma-coverage-istanbul-reporter"),
require("@angular-devkit/build-angular/plugins/karma"),
],
client: {
clearContext: false, // leave Jasmine Spec Runner output visible in browser
},
coverageIstanbulReporter: {
dir: require("path").join(__dirname, "./coverage/aaweb"),
reports: ["html", "lcovonly", "text-summary", "cobertura"],
fixWebpackSourcePaths: true,
},
reporters: ["progress", "kjhtml", "junit", "coverage-istanbul"],
junitReporter: {
outputDir: "./junit/aaweb",
},
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
aautoWatch: true,
browsers: ["Chrome", "ChromeHeadless"],
singleRun: false,
restartOnFileChange: true,
browserDisconnectTolerance: 2,
customLaunchers: {
ChromeDebug: {
base: "Chrome",
flags: ["--remote-debugging-port=9333"],
debug: true,
},
ChromeHeadlessCI: {
base: "ChromeHeadless",
flags: ["--no-sandbox"],
},
ChromeHeadlessNoSandbox: {
base: "ChromeHeadless",
flags: ["--no-sandbox"],
},
},
});
};


dockerFile:

FROM node:alpine AS build-angular

WORKDIR /app
RUN npm cache clean --force
COPY ./ /app/
RUN npm install && npm run build
RUN npm test

FROM nginx:alpine

COPY --from=build-angular /app/dist/aplicationame/browser /usr/share/nginx/html

COPY /nginx.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

ENV CHROME_BIN=/usr/bin/chromium-browser
ENV PUPPETEER_SKIP_DOWNLOAD='true'
RUN apk update && apk install chromium

CMD ["nginx", "-g", "daemon off;"]


but keeps giving me the error when the tests are executed:

[![Launching browsers ChromeHeadless with concurrency unlimited
60.11 11 09 2024 02:32:06.719:INFO \[launcher\]: Starting browser ChromeHeadless
60.14 11 09 2024 02:32:06.751:ERROR \[launcher\]: Cannot start ChromeHeadless
60.14 Can not find the binary /usr/bin/chromium-browser
60.14 Please set env variable CHROME_BIN


I`ve already tried to set the path hardcoded like:

process.env.CHROME_BIN = /usr/bin/chromium-browser;


didnt work as well, is there something i`m missing?

maybe this question is duplicated cause i already read like 10 or more posts with the same doubt, but so far none of them solved this issue for me, so if anyone can give me a clue.

Thanks.

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