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FROM alpine:%%PLACEHOLDER%%
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RUN apk add --no-cache \
gmp-dev
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# skip installing gem documentation
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RUN set -eux; \
mkdir -p /usr/local/etc; \
{ \
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echo 'install: --no-document'; \
echo 'update: --no-document'; \
} >> /usr/local/etc/gemrc
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ENV RUBY_MAJOR %%VERSION%%
ENV RUBY_VERSION %%FULL_VERSION%%
ENV RUBY_DOWNLOAD_SHA256 %%SHA256%%
ENV RUBYGEMS_VERSION %%RUBYGEMS%%
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# some of ruby's build scripts are written in ruby
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# we purge system ruby later to make sure our final image uses what we just built
# readline-dev vs libedit-dev: https://bugs.ruby-lang.org/issues/11869 and https://github.com/docker-library/ruby/issues/75
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RUN set -eux; \
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\
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apk add --no-cache --virtual .ruby-builddeps \
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autoconf \
bison \
bzip2 \
bzip2-dev \
ca-certificates \
coreutils \
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dpkg-dev dpkg \
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gcc \
gdbm-dev \
glib-dev \
libc-dev \
libffi-dev \
libxml2-dev \
libxslt-dev \
linux-headers \
make \
ncurses-dev \
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openssl \
openssl-dev \
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procps \
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readline-dev \
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ruby \
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tar \
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xz \
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yaml-dev \
zlib-dev \
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; \
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\
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wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
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\
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mkdir -p /usr/src/ruby; \
tar -xJf ruby.tar.xz -C /usr/src/ruby --strip-components=1; \
rm ruby.tar.xz; \
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\
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cd /usr/src/ruby; \
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\
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# https://github.com/docker-library/ruby/issues/196
# https://bugs.ruby-lang.org/issues/14387#note-13 (patch source)
# https://bugs.ruby-lang.org/issues/14387#note-16 ("Therefore ncopa's patch looks good for me in general." -- only breaks glibc which doesn't matter here)
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wget -O 'thread-stack-fix.patch' 'https://bugs.ruby-lang.org/attachments/download/7081/0001-thread_pthread.c-make-get_main_stack-portable-on-lin.patch'; \
echo '3ab628a51d92fdf0d2b5835e93564857aea73e0c1de00313864a94a6255cb645 *thread-stack-fix.patch' | sha256sum --check --strict; \
patch -p1 -i thread-stack-fix.patch; \
rm thread-stack-fix.patch; \
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\
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# hack in "ENABLE_PATH_CHECK" disabling to suppress:
# warning: Insecure world writable dir
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{ \
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echo '#define ENABLE_PATH_CHECK 0'; \
echo; \
cat file.c; \
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} > file.c.new; \
mv file.c.new file.c; \
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\
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autoconf; \
gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
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# the configure script does not detect isnan/isinf as macros
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export ac_cv_func_isnan=yes ac_cv_func_isinf=yes; \
./configure \
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--build="$gnuArch" \
--disable-install-doc \
--enable-shared \
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; \
make -j "$(nproc)"; \
make install; \
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\
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runDeps="$( \
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scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
| tr ',' '\n' \
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| sort -u \
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| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
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)"; \
apk add --no-network --virtual .ruby-rundeps \
$runDeps \
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bzip2 \
ca-certificates \
libffi-dev \
procps \
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yaml-dev \
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zlib-dev \
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; \
apk del --no-network .ruby-builddeps; \
\
cd /; \
rm -r /usr/src/ruby; \
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# make sure bundled "rubygems" is older than RUBYGEMS_VERSION (https://github.com/docker-library/ruby/issues/246)
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ruby -e 'exit(Gem::Version.create(ENV["RUBYGEMS_VERSION"]) > Gem::Version.create(Gem::VERSION))'; \
gem update --system "$RUBYGEMS_VERSION" && rm -r /root/.gem/; \
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# rough smoke test
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ruby --version; \
gem --version; \
bundle --version
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# install things globally, for great justice
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# and don't create ".bundle" in all our apps
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ENV GEM_HOME /usr/local/bundle
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ENV BUNDLE_PATH="$GEM_HOME" \
BUNDLE_SILENCE_ROOT_WARNING=1 \
BUNDLE_APP_CONFIG="$GEM_HOME"
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# path recommendation: https://github.com/bundler/bundler/pull/6469#issuecomment-383235438
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ENV PATH $GEM_HOME/bin:$BUNDLE_PATH/gems/bin:$PATH
# adjust permissions of a few directories for running "gem install" as an arbitrary user
RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
# (BUNDLE_PATH = GEM_HOME, no need to mkdir/chown both)
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CMD [ "irb" ]