I'm using multistage build to compile an react app. Primarily I use a base node image, after I use a nginx image to expose to the port 80.
I'm attempting to COPY the build files from builder stage to the /usr/share/nginx/html folder, but gets nothing.
Building the image alone it's working, with docker-compose does nothing.
I attempted to open an issue on the docker repo but is closed, therefore open on the moby engine also is not a option when the podman(that's use moby engine) works well, except the compose that spawn a command as not sudoers and the build fail on the node image download.
FROM node:slim as build
WORKDIR /usr/app
COPY package.json .
COPY public public
COPY src src
RUN npm install
RUN npm run build
COPY build .
RUN rm -rf src
RUN rm -rf build
FROM nginx:latest
COPY --from=build /usr/app /usr/share/nginx/html
# RUN chown www-data:www-data ./usr/share/nginx/html/*
EXPOSE 80
On the ls command I see the build, but when I'm attempt to connect to localhost a get the forbidden error, and when attempt to access the index.html I'm getting the 404.
I entered on the the html folder using bash and verify using the namei -l . and there's no file at all.
What could I be doing wrong? I've searched a ton of questions and don't get the answer or any direction, execpt the fact of add a slash of the folder to be copied.
Currently I'm using a RHEL. So, needs sudoers permission to run docker commands. Maybe it's the problem? On podman-compose I need to spawn an sudo docker-compose build command, and it run another build commands as non root.
Therefore, this not occurs on docker-ce.
First of all, ensure you have a correct nginx config in the file nginx.conf. e.g:
server {
listen 80;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
}
Second, it's not necessary run these lines:
COPY build . # you should call directly the build folder, because there isn't any other files of build stage
RUN rm -rf src #after finish build step, this image will no longer exist.
RUN rm -rf build
RUN ls
Finally your Dockerfile should look like this
FROM node:slim as build
WORKDIR /usr/app
COPY package.json .
COPY public public
COPY src src
RUN npm install
RUN npm run build
FROM nginx:latest
COPY --from=build /usr/app/build /usr/share/nginx/html
COPY nginx.conf /etc/nginx/conf.d
# if you are using react router
# you need to overwrite the default nginx configurations
# remove default nginx configuration file
RUN rm /etc/nginx/conf.d/default.conf
EXPOSE 80