An error failed to solve with frontend dockerfile v0

Question

I was attempting to create a Docker image for my Gatsby app. I get the following problem whenever I use the command docker build. -t gatsbyapp:

failed to solve with frontend dockerfile.v0: failed to build LLB:
failed to compute cache key: "/.env" not found: not found

This is my dockerfile:

FROM node:13

WORKDIR /app

COPY package.json .

RUN yarn global add gatsby-cli

RUN yarn install

COPY gatsby-config.js .

COPY .env .

EXPOSE 8000

CMD ["gatsby","develop","-H","0.0.0.0"]