This commit from January 2, 2026 (3 days ago) updated the node requirement from >=14 to >=18 and updated express from ^4.17.2 to ^5.2.1 without updating the base image in the Dockerfile and addressing breaking changes of express, consequently breaking the application and image.
The following output is shown when trying to start the image:
> deepl-mock@1.18.0 start /app
> DEEPL_MOCK_SERVER_PORT=${DEEPL_MOCK_SERVER_PORT:-3000} DEEPL_MOCK_PROXY_SERVER_PORT=${DEEPL_MOCK_PROXY_SERVER_PORT:-3001} node index.js
/app/node_modules/merge-descriptors/index.js:13
if (!overwrite && Object.hasOwn(destination, name)) {
^
TypeError: Object.hasOwn is not a function
at mergeDescriptors (/app/node_modules/merge-descriptors/index.js:13:28)
at createApplication (/app/node_modules/express/lib/express.js:41:3)
at Object.<anonymous> (/app/index.js:8:13)
at Module._compile (internal/modules/cjs/loader.js:1114:14)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1143:10)
at Module.load (internal/modules/cjs/loader.js:979:32)
at Function.Module._load (internal/modules/cjs/loader.js:819:12)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:75:12)
at internal/main/run_main_module.js:17:47
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! deepl-mock@1.18.0 start: `DEEPL_MOCK_SERVER_PORT=${DEEPL_MOCK_SERVER_PORT:-3000} DEEPL_MOCK_PROXY_SERVER_PORT=${DEEPL_MOCK_PROXY_SERVER_PORT:-3001} node index.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the deepl-mock@1.18.0 start 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! /home/node/.npm/_logs/2026-01-05T11_30_03_509Z-debug.log
Updating the base image in the Dockerfile from node:14-alpine to node:18-alpine and replacing occurrences of app.all('/*', handler) and app.all('*', handler) with app.all('/{*splat}', handler) in the index.js as suggested by the express migration guide resolved this issue in my quick testing.
This commit from January 2, 2026 (3 days ago) updated the node requirement from
>=14to>=18and updated express from^4.17.2to^5.2.1without updating the base image in the Dockerfile and addressing breaking changes of express, consequently breaking the application and image.The following output is shown when trying to start the image:
Updating the base image in the Dockerfile from
node:14-alpinetonode:18-alpineand replacing occurrences ofapp.all('/*', handler)andapp.all('*', handler)withapp.all('/{*splat}', handler)in the index.js as suggested by the express migration guide resolved this issue in my quick testing.