change npm install command on docker to see if fixes the build

Dockerfile

@@ -7,11 +7,10 @@ ENV NODE_ENV=production
 # set working directory.
 WORKDIR /kutt
 
-# download dependencies while using Docker's caching
-RUN --mount=type=bind,source=package.json,target=package.json \
-    --mount=type=bind,source=package-lock.json,target=package-lock.json \
-    --mount=type=cache,target=/root/.npm \
-    npm ci --omit=dev
+# download dependencies
+COPY package.json package-lock.json ./
+
+RUN npm ci
 
 RUN mkdir -p /var/lib/kutt