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docker-library--ruby/Dockerfile.template

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{{
def is_alpine:
env.variant | startswith("alpine")
;
def is_slim:
env.variant | startswith("slim-")
-}}
{{ if is_alpine then ( -}}
FROM alpine:{{ env.variant | ltrimstr("alpine") }}
{{ ) elif is_slim then ( -}}
FROM debian:{{ env.variant | ltrimstr("slim-") }}-slim
{{ ) else ( -}}
FROM buildpack-deps:{{ env.variant }}
{{ ) end -}}
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{{ if is_alpine then ( -}}
RUN set -eux; \
apk add --no-cache \
bzip2 \
ca-certificates \
gmp-dev \
libffi-dev \
procps \
yaml-dev \
zlib-dev \
;
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{{ ) elif is_slim then ( -}}
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends \
bzip2 \
ca-certificates \
libffi-dev \
libgmp-dev \
libssl-dev \
libyaml-dev \
procps \
zlib1g-dev \
; \
rm -rf /var/lib/apt/lists/*
{{ ) else "" end -}}
# skip installing gem documentation
RUN set -eux; \
mkdir -p /usr/local/etc; \
{ \
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echo 'install: --no-document'; \
echo 'update: --no-document'; \
} >> /usr/local/etc/gemrc
ENV LANG C.UTF-8
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ENV RUBY_MAJOR {{ env.version }}
ENV RUBY_VERSION {{ .version }}
ENV RUBY_DOWNLOAD_SHA256 {{ .sha256 }}
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# 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
RUN set -eux; \
\
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{{ if is_alpine then ( -}}
# readline-dev vs libedit-dev: https://bugs.ruby-lang.org/issues/11869 and https://github.com/docker-library/ruby/issues/75
apk add --no-cache --virtual .ruby-builddeps \
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autoconf \
bison \
bzip2 \
bzip2-dev \
ca-certificates \
coreutils \
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 \
openssl \
openssl-dev \
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patch \
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procps \
readline-dev \
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ruby \
tar \
xz \
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yaml-dev \
zlib-dev \
; \
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{{ ) else ( -}}
savedAptMark="$(apt-mark showmanual)"; \
apt-get update; \
apt-get install -y --no-install-recommends \
bison \
dpkg-dev \
libgdbm-dev \
ruby \
{{ if is_slim then ( -}}
autoconf \
gcc \
libbz2-dev \
libglib2.0-dev \
libncurses-dev \
libreadline-dev \
libxml2-dev \
libxslt-dev \
make \
wget \
xz-utils \
{{ if env.variant | endswith("stretch") then "" else ( -}}
# https://packages.debian.org/sid/libgdbm-compat-dev (needed for "dbm" core module, but only in Buster+)
libgdbm-compat-dev \
{{ ) end -}}
{{ ) else "" end -}}
; \
rm -rf /var/lib/apt/lists/*; \
{{ ) end -}}
\
wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${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; \
\
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{{ if is_alpine then ( -}}
# 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; \
\
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# the configure script does not detect isnan/isinf as macros
export ac_cv_func_isnan=yes ac_cv_func_isinf=yes; \
\
{{ ) else "" end -}}
# 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="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
./configure \
--build="$gnuArch" \
--disable-install-doc \
--enable-shared \
; \
make -j "$(nproc)"; \
make install; \
\
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{{ if is_alpine then ( -}}
runDeps="$( \
scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
| tr ',' '\n' \
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| sort -u \
| awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
)"; \
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apk add --no-network --virtual .ruby-rundeps $runDeps; \
apk del --no-network .ruby-builddeps; \
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{{ ) else ( -}}
apt-mark auto '.*' > /dev/null; \
apt-mark manual $savedAptMark > /dev/null; \
find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec ldd '{}' ';' \
| awk '/=>/ { print $(NF-1) }' \
| sort -u \
| grep -vE '^/usr/local/lib/' \
| xargs -r dpkg-query --search \
| cut -d: -f1 \
| sort -u \
| xargs -r apt-mark manual \
; \
apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
{{ ) end -}}
\
cd /; \
rm -r /usr/src/ruby; \
# verify we have no "ruby" packages installed
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{{ if is_alpine then ( -}}
if \
apk --no-network list --installed \
| grep -v '^[.]ruby-rundeps' \
| grep -i ruby \
; then \
exit 1; \
fi; \
{{ ) else ( -}}
if dpkg -l | grep -i ruby; then exit 1; fi; \
{{ ) end -}}
[ "$(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 \
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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"
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CMD [ "irb" ]