oblique violet
So I have this little mockup application that allows a user to upload profile pictures, resizes them to 100x100 pixel jpeg, then displays that resized profile picture and allows them to download it. I guess what I don't understand is how to make this application work with docker, using docker volumes (which is how I think I'm supposed to get it to work).
In my project directory, I have a directory called uploads which is where the resized profile picture is supposed to be saved to using the following code: dst, err := os.Create("./uploads/pfp.jpeg") and then if _, err = dst.Write(jpegData); err != nil { /* handle error */ }. This works just fine when not containerized, but when it is containerized, I simply don't understand where I'm going wrong.
This is what my dockerfile currently looks like:
# syntax=docker/dockerfile:1.0
FROM golang:1.21.6 AS build-stage
WORKDIR /build
COPY go.mod go.sum ./
RUN go mod download && go mod verify
COPY /static ./static
COPY /templates ./templates
COPY *.go ./
COPY /uploads /uploads
RUN CGO_ENABLED=0 GOOS=linux go build -o ./docker_volumes
FROM build-stage AS test-stage
RUN go test ./...
FROM gcr.io/distroless/base-debian11 AS release-stage
WORKDIR /app
COPY --from=build-stage /build/static ./static
COPY --from=build-stage /build/templates ./templates
COPY --from=build-stage /build/docker_volumes ./docker_volumes
VOLUME [ "/app/uploads" ]
EXPOSE 8080/tcp
USER nonroot:nonroot
ENTRYPOINT [ "./docker_volumes" ]
And the command I use to run it is docker run -v my_volume:/app/uploads -p 8080:8080 my_app.
When my server navigates to localhost:8080/upload which is the path where the uploading happens, I get the following error: error opening destination file, err:open ./uploads/pfp.jpeg: permission denied. Any help at all is greatly appreciated, thank you! ❤️
solemn nimbus
pseudo prism