Update docker and build to set API host

Dockerfile

@@ -19,6 +19,11 @@ WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
+# Add an ARG for NEXT_PUBLIC_DRB_BASE_API_URL
+ARG NEXT_PUBLIC_DRB_BASE_API_URL
+# Set it as an ENV variable for the build
+ENV NEXT_PUBLIC_DRB_BASE_API_URL=${NEXT_PUBLIC_DRB_BASE_API_URL}
+
 # Build the Next.js application for production
 ENV NODE_ENV=production
 RUN npm run build