COPY failed: file not found in build context or excluded by .dockerignore: stat yarn.lock: file does not exist

[allcho]

Hello, try to using Docker

I do build container: docker build -t nextjs-docker . and get failed

Sending build context to Docker daemon 219.1kB
Step 1/23 : FROM node:16-alpine AS deps
---> 23990429c0d7
Step 2/23 : RUN apk add --no-cache libc6-compat
---> Using cache
---> 7544c5d49f28
Step 3/23 : WORKDIR /app
---> Using cache
---> a9b3ee4350bc
Step 4/23 : COPY package.json yarn.lock ./
COPY failed: file not found in build context or excluded by .dockerignore: stat yarn.lock: file does not exist

Whats wrog I do?

[GabenGar]

Do you have yarn.lock in the source directory?