Railway•11mo ago

Environment variables not being injected in NodeJS app

I have a payloadCMS build command that cannot finish with railway even though I added all my .env variables as service variables. For instance I have set NODE_ENV=production, but inside the application there is still NODE_ENV=develop.

Solution:

you need to specify the needed variables via the ARG keyword https://docs.railway.app/guides/dockerfiles#using-variables-at-build-time...

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10 Replies

Percy•11mo ago

Project ID: d426ba88-e4ae-4a98-8b5a-b473f6902b16

ThijsOP•11mo ago

d426ba88-e4ae-4a98-8b5a-b473f6902b16

Brody•11mo ago

are you building with a dockerfile?

ThijsOP•11mo ago

Yes I use the default docker file

FROM node:18-alpine as base

FROM base as builder

WORKDIR /home/node
COPY package*.json ./

COPY . .
RUN yarn install
RUN yarn build

FROM base as runtime

ENV NODE_ENV=production

WORKDIR /home/node
COPY package*.json  ./

RUN yarn install --production
COPY --from=builder /home/node/dist ./dist
COPY --from=builder /home/node/build ./build

EXPOSE 3000

CMD ["node", "dist/server.js"]

FROM node:18-alpine as base

FROM base as builder

WORKDIR /home/node
COPY package*.json ./

COPY . .
RUN yarn install
RUN yarn build

FROM base as runtime

ENV NODE_ENV=production

WORKDIR /home/node
COPY package*.json  ./

RUN yarn install --production
COPY --from=builder /home/node/dist ./dist
COPY --from=builder /home/node/build ./build

EXPOSE 3000

CMD ["node", "dist/server.js"]

Solution

Brody•11mo ago

you need to specify the needed variables via the ARG keyword https://docs.railway.app/guides/dockerfiles#using-variables-at-build-time

ThijsOP•11mo ago

Can you give me an example for NODE_ENV?

Brody•11mo ago

ARG NODE_ENV

ThijsOP•11mo ago

So all env keys I need to pass to access through ARG.

ARG NODE_ENV

ENV NODE_ENV=$NODE_ENV

ARG NODE_ENV

ENV NODE_ENV=$NODE_ENV

Brody•11mo ago

please have a look at the doc section I linked, ENV is not needed here

ThijsOP•11mo ago

Thanks! I'm getting somewhere now I followed a different tutorial which is out of date, because it doesn't use ARG

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Environment variables not being injected in NodeJS app