Getting Error related to postgresql-client while running fly delpoy

I have a simple rails app that I wanted to deploy on fly. It uses Postgres on local as well.
I am getting an error related to postgresql client, precisely:

Error failed to fetch an image or build from source: error building: executor failed running [/bin/sh -c apt-get update -qq && apt-get install --no-install-recommends -y postgresql-client && rm -rf /var/lib/apt/lists /var/cache/apt/archives]: exit code: 100

Note : I have an intel mac 2018, for reference.
My docker file:

# syntax = docker/dockerfile:1

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

LABEL fly_launch_runtime="rails"

# Rails app lives here
WORKDIR /rails

# Set production environment
ENV RAILS_ENV="production" \
    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 node-gyp pkg-config python

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

# Install application gems
COPY --link Gemfile Gemfile.lock ./
RUN bundle install && \
    rm -rf ~/.bundle/ $BUNDLE_PATH/ruby/*/cache $BUNDLE_PATH/ruby/*/bundler/gems/*/.git

# Install node modules
COPY --link package.json ./
RUN npm install

# Copy application code
COPY --link . .

# Precompiling assets for production without requiring secret RAILS_MASTER_KEY
RUN SECRET_KEY_BASE=DUMMY ./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 postgresql-client && \
    rm -rf /var/lib/apt/lists /var/cache/apt/archives

# Run and own the application files as a non-root user for security
RUN useradd rails --home /rails --shell /bin/bash
USER rails:rails

# Copy built artifacts: gems, application
COPY --from=build /usr/local/bundle /usr/local/bundle
COPY --from=build --chown=rails:rails /rails /rails

# Deployment options

# Entrypoint prepares the database.
ENTRYPOINT ["/rails/bin/docker-entrypoint"]

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

Hi there!

I was able to reproduce it locally - it appears you have hit a bug on the postgresql-client package that happens on that specific Debian version. If you remove the -qq option (which hides the error messages) and search around for solutions, there’s some very old suggested fixes including creating dirs and touching files.

However, I’d recommend upgrading the ruby version (which will upgrade the base image). I’ve tried 2.6.4 instead of 2.6.2 (which should be backwards compatible) and it builds just fine. Would that work?

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