CODEWITHSUNDEEP
docker
Anh Vo Nguyen Nhat
Anh Vo Nguyen Nhat

Reputation: 83

Multi-stage build cannot copy from previous stage - File not found

I have the docker file as follows:

FROM node:8 as builder
WORKDIR /usr/src/app
COPY ./src/register_form/package*.json .
RUN npm install
COPY ./src/register_form .
RUN  yarn build

FROM tensorflow/tensorflow:1.10.0-gpu-py3
COPY --from=builder /usr/src/app/register_form/build/index.html /app/src/
WORKDIR /app
ENTRYPOINT ["python3"]
CMD ["/app/src/main.pyc"]

However, it cannot copy the index.html from the builder stage. Although when I list the folder in the first stage, the files are there.

The error is:

Step 8/22 : COPY --from=builder ./register_form/build/ /app/src/

COPY failed: stat /var/lib/docker/overlay2/5470e05501898502b3aa437639f975ca3e4bfb5a1e897281e62e07ab89866304/merged/register_form/build: no such file or directory

How can I fix this problem - the COPY --from=builder docker command?

Upvotes: 1

Views: 5544

Answers (1)

grapes
grapes

Reputation: 8646

I think you are misusing COPY command. As it is told in docs:

If src is a directory, the entire contents of the directory are copied, including filesystem metadata.

Note: The directory itself is not copied, just its contents.

So your command COPY ./src/register_form . does NOT create register_form folder in container, but instead copies all contents. You can try adding:

RUN ls .

to your Dockerfile to make sure.

As noticed by @BMitch in comments, you can explicitly set destination folder name to achieve expected results:

COPY ./src/register_form/ register_form/

Upvotes: 2

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