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FROM alpine:3.11
RUN apk add --no-cache \
gmp-dev
# skip installing gem documentation
RUN set -eux; \
mkdir -p /usr/local/etc; \
{ \
echo 'install: --no-document'; \
echo 'update: --no-document'; \
} >> /usr/local/etc/gemrc
ENV RUBY_MAJOR 2.6
ENV RUBY_VERSION 2.6.5
ENV RUBY_DOWNLOAD_SHA256 d5d6da717fd48524596f9b78ac5a2eeb9691753da5c06923a6c31190abe01a62
# some of ruby's build scripts are written in ruby
# 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
RUN set -eux; \
\
apk add --no-cache --virtual .ruby-builddeps \
autoconf \
bison \
bzip2 \
bzip2-dev \
ca-certificates \
coreutils \
dpkg-dev dpkg \
gcc \
gdbm-dev \
glib-dev \
libc-dev \
libffi-dev \
libxml2-dev \
libxslt-dev \
linux-headers \
make \
ncurses-dev \
openssl \
openssl-dev \
procps \
readline-dev \
ruby \
tar \
xz \
yaml-dev \
zlib-dev \
; \
\
wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${RUBY_MAJOR%-rc}/ruby-$RUBY_VERSION.tar.xz"; \
echo "$RUBY_DOWNLOAD_SHA256 *ruby.tar.xz" | sha256sum --check --strict; \
\
mkdir -p /usr/src/ruby; \
tar -xJf ruby.tar.xz -C /usr/src/ruby --strip-components=1; \
rm ruby.tar.xz; \
\
cd /usr/src/ruby; \
\
# https://github.com/docker-library/ruby/issues/196
# https://bugs.ruby-lang.org/issues/14387#note-13 (patch source)
# https://bugs.ruby-lang.org/issues/14387#note-16 ("Therefore ncopa's patch looks good for me in general." -- only breaks glibc which doesn't matter here)
wget -O 'thread-stack-fix.patch' 'https://bugs.ruby-lang.org/attachments/download/7081/0001-thread_pthread.c-make-get_main_stack-portable-on-lin.patch'; \
echo '3ab628a51d92fdf0d2b5835e93564857aea73e0c1de00313864a94a6255cb645 *thread-stack-fix.patch' | sha256sum --check --strict; \
patch -p1 -i thread-stack-fix.patch; \
rm thread-stack-fix.patch; \
\
# hack in "ENABLE_PATH_CHECK" disabling to suppress:
# warning: Insecure world writable dir
{ \
echo '#define ENABLE_PATH_CHECK 0'; \
echo; \
cat file.c; \
} > file.c.new; \
mv file.c.new file.c; \
\
autoconf; \
gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
# the configure script does not detect isnan/isinf as macros
export ac_cv_func_isnan=yes ac_cv_func_isinf=yes; \
./configure \
--build="$gnuArch" \
--disable-install-doc \
--enable-shared \
; \
make -j "$(nproc)"; \
make install; \
\
runDeps="$( \
scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
| tr ',' '\n' \
| sort -u \
| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
)"; \
apk add --no-network --virtual .ruby-rundeps \
$runDeps \
bzip2 \
ca-certificates \
libffi-dev \
procps \
yaml-dev \
zlib-dev \
; \
apk del --no-network .ruby-builddeps; \
\
cd /; \
rm -r /usr/src/ruby; \
# verify we have no "ruby" packages installed
! apk --no-network list --installed \
| grep -v '^[.]ruby-rundeps' \
| grep -i ruby \
; \
[ "$(command -v ruby)" = '/usr/local/bin/ruby' ]; \
# rough smoke test
ruby --version; \
gem --version; \
bundle --version
# don't create ".bundle" in all our apps
ENV GEM_HOME /usr/local/bundle
ENV BUNDLE_SILENCE_ROOT_WARNING=1 \
BUNDLE_APP_CONFIG="$GEM_HOME"
ENV PATH $GEM_HOME/bin:$PATH
# adjust permissions of a few directories for running "gem install" as an arbitrary user
RUN mkdir -p "$GEM_HOME" && chmod 777 "$GEM_HOME"
CMD [ "irb" ]
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