ERROR [build 10/10] RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile

Hi everyone!
I’m getting this error while trying to deploy a Rails app:

Error: failed to fetch an image or build from source: error building: failed to solve: executor failed running [/bin/bash -o pipefail -c SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile]: exit code: 1
=> ERROR [build 10/10] RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile 5.8s

My dockerfile:

# syntax = docker/dockerfile:1

# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
FROM${RUBY_VERSION}-jemalloc-slim as base

LABEL fly_launch_runtime="rails"

# Rails app lives here
WORKDIR /rails

# Set production environment
    BUNDLE_PATH="/usr/local/bundle" \
    BUNDLE_WITHOUT="development:test" \

# Update gems and bundler
RUN gem update --system --no-document && \
    gem install -N bundler

# Install packages needed to install nodejs
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y curl && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Install Node.js
ENV PATH=/usr/local/node/bin:$PATH
RUN curl -sL | tar xz -C /tmp/ && \
    /tmp/node-build-master/bin/node-build "${NODE_VERSION}" /usr/local/node && \
    rm -rf /tmp/node-build-master

# Throw-away build stage to reduce size of final image
FROM base as build

# Install packages needed to build gems and node modules
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y build-essential libpq-dev libyaml-dev node-gyp pkg-config python-is-python3

# Install yarn
RUN npm install -g yarn@$YARN_VERSION

# Build options
ENV PATH="/usr/local/node/bin:$PATH"

# Install application gems
COPY --link Gemfile Gemfile.lock ./
RUN bundle install && \
    bundle exec bootsnap precompile --gemfile && \
    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git

# Install node modules
COPY --link .yarnrc package.json package-lock.json yarn.lock ./
COPY --link .yarn/releases/* .yarn/releases/
RUN yarn install --frozen-lockfile

# Copy application code
COPY --link . .

# Precompile bootsnap code for faster boot times
RUN bundle exec bootsnap precompile app/ lib/

# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile

# Final stage for app image
FROM base

# Install packages needed for deployment
RUN apt-get update -qq && \
    apt-get install --no-install-recommends -y curl iputils-ping libsqlite3-0 net-tools postgresql-client procps traceroute && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Copy built artifacts: gems, application
COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
COPY --from=build /rails /rails

# Run and own only the runtime files as a non-root user for security
RUN groupadd --system --gid 1000 rails && \
    useradd rails --uid 1000 --gid 1000 --create-home --shell /bin/bash && \
    chown -R 1000:1000 db log storage tmp
USER 1000:1000

# Entrypoint sets up the container.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]

# Start the server by default, this can be overwritten at runtime
CMD ["./bin/rails", "server"]

Any help would be greatly appreciated.

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