# 1: Use ruby 2.4.1 as base:
FROM ruby:2.4.1-alpine

# 2: We'll set this gem's lib path as the working directory
WORKDIR /usr/src/lib

# 3: We'll set the working dir as HOME and add the app's binaries path to $PATH:
# NOTE: The PAGER variable allows Pry to work on alpine linux.
# See https://github.com/pry/pry/issues/1494
ENV HOME=/usr/src/lib PATH=/usr/src/lib/bin:$PATH PAGER='busybox less'

# 4: Set the default command:
CMD ["guard"]

# --- Install development and runtime dependencies: ---

# 6: Install the development & runtime packages:
RUN set -ex && apk add --no-cache \
  build-base \
  git \
  ca-certificates \
  openssl \
  tzdata \
  su-exec