Change to npm instead of yarn in docker image to test for build error on github action

server/Dockerfile-minimal

@@ -7,18 +7,16 @@ ARG DEBIAN_FRONTEND=noninteractive
 
 WORKDIR /usr/src/app
 
-COPY package.json yarn.lock ./
+COPY package.json package-lock.json ./
 
 RUN apt-get update
 RUN apt-get install gcc g++ make cmake python3 python3-pip ffmpeg -y
 
-RUN npm i -g yarn --force
-
-RUN yarn install
+RUN npm install
 
 COPY . .
 
-RUN yarn build
+RUN npm run build
 
 # Clean up commands
 RUN apt-get autoremove -y && apt-get clean && \