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Dockerfile
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# vim:set ft=dockerfile:
FROM debian:buster-slim
RUN set -ex; \
if ! command -v gpg > /dev/null; then \
apt-get update; \
apt-get install -y --no-install-recommends \
gnupg \
dirmngr \
; \
rm -rf /var/lib/apt/lists/*; \
fi
# explicitly set user/group IDs
RUN set -eux; \
groupadd -r postgres --gid=999; \
# https://salsa.debian.org/postgresql/postgresql-common/blob/997d842ee744687d99a2b2d95c1083a2615c79e8/debian/postgresql-common.postinst#L32-35
useradd -r -g postgres --uid=999 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres; \
# also create the postgres user's home directory with appropriate permissions
# see https://github.com/docker-library/postgres/issues/274
mkdir -p /var/lib/postgresql; \
chown -R postgres:postgres /var/lib/postgresql
# grab gosu for easy step-down from root
ENV GOSU_VERSION 1.11
RUN set -x \
&& apt-get update && apt-get install -y --no-install-recommends ca-certificates wget && rm -rf /var/lib/apt/lists/* \
&& wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
&& wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
&& export GNUPGHOME="$(mktemp -d)" \
&& gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
&& gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
&& { command -v gpgconf > /dev/null && gpgconf --kill all || :; } \
&& rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
&& chmod +x /usr/local/bin/gosu \
&& gosu nobody true \
&& apt-get purge -y --auto-remove ca-certificates wget
# make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default
RUN set -eux; \
if [ -f /etc/dpkg/dpkg.cfg.d/docker ]; then \
# if this file exists, we're likely in "debian:xxx-slim", and locales are thus being excluded so we need to remove that exclusion (since we need locales)
grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker; \
! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker; \
fi; \
apt-get update; apt-get install -y --no-install-recommends locales; rm -rf /var/lib/apt/lists/*; \
localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
ENV LANG en_US.utf8
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends \
# install "nss_wrapper" in case we need to fake "/etc/passwd" and "/etc/group" (especially for OpenShift)
# https://github.com/docker-library/postgres/issues/359
# https://cwrap.org/nss_wrapper.html
libnss-wrapper \
# install "xz-utils" for .sql.xz docker-entrypoint-initdb.d files
xz-utils \
; \
rm -rf /var/lib/apt/lists/*
RUN mkdir /docker-entrypoint-initdb.d
RUN set -ex; \
# pub 4096R/ACCC4CF8 2011-10-13 [expires: 2019-07-02]
# Key fingerprint = B97B 0AFC AA1A 47F0 44F2 44A0 7FCC 7D46 ACCC 4CF8
# uid PostgreSQL Debian Repository
key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8'; \
export GNUPGHOME="$(mktemp -d)"; \
gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/postgres.gpg; \
command -v gpgconf > /dev/null && gpgconf --kill all; \
rm -rf "$GNUPGHOME"; \
apt-key list
ENV PG_MAJOR 12
ENV PG_VERSION 12.2-2.pgdg100+1
RUN set -ex; \
\
# see note below about "*.pyc" files
export PYTHONDONTWRITEBYTECODE=1; \
\
dpkgArch="$(dpkg --print-architecture)"; \
case "$dpkgArch" in \
amd64|i386|ppc64el) \
# arches officialy built by upstream
echo "deb http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main $PG_MAJOR" > /etc/apt/sources.list.d/pgdg.list; \
apt-get update; \
;; \
*) \
# we're on an architecture upstream doesn't officially build for
# let's build binaries from their published source packages
echo "deb-src http://apt.postgresql.org/pub/repos/apt/ buster-pgdg main $PG_MAJOR" > /etc/apt/sources.list.d/pgdg.list; \
\
case "$PG_MAJOR" in \
9.* | 10 ) ;; \
*) \
# https://github.com/docker-library/postgres/issues/484 (clang-6.0 required, only available in stretch-backports)
# TODO remove this once we hit buster+
echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list.d/pgdg.list; \
;; \
esac; \
\
tempDir="$(mktemp -d)"; \
cd "$tempDir"; \
\
savedAptMark="$(apt-mark showmanual)"; \
\
# build .deb files from upstream's source packages (which are verified by apt-get)
apt-get update; \
apt-get build-dep -y \
postgresql-common pgdg-keyring \
"postgresql-$PG_MAJOR=$PG_VERSION" \
; \
DEB_BUILD_OPTIONS="nocheck parallel=$(nproc)" \
apt-get source --compile \
postgresql-common pgdg-keyring \
"postgresql-$PG_MAJOR=$PG_VERSION" \
; \
# we don't remove APT lists here because they get re-downloaded and removed later
\
# reset apt-mark's "manual" list so that "purge --auto-remove" will remove all build dependencies
# (which is done after we install the built packages so we don't have to redownload any overlapping dependencies)
apt-mark showmanual | xargs apt-mark auto > /dev/null; \
apt-mark manual $savedAptMark; \
\
# create a temporary local APT repo to install from (so that dependency resolution can be handled by APT, as it should be)
ls -lAFh; \
dpkg-scanpackages . > Packages; \
grep '^Package: ' Packages; \
echo "deb [ trusted=yes ] file://$tempDir ./" > /etc/apt/sources.list.d/temp.list; \
# work around the following APT issue by using "Acquire::GzipIndexes=false" (overriding "/etc/apt/apt.conf.d/docker-gzip-indexes")
# Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
# ...
# E: Failed to fetch store:/var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages Could not open file /var/lib/apt/lists/partial/_tmp_tmp.ODWljpQfkE_._Packages - open (13: Permission denied)
apt-get -o Acquire::GzipIndexes=false update; \
;; \
esac; \
\
apt-get install -y --no-install-recommends postgresql-common; \
sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf; \
apt-get install -y --no-install-recommends \
"postgresql-$PG_MAJOR=$PG_VERSION" \
; \
\
rm -rf /var/lib/apt/lists/*; \
\
if [ -n "$tempDir" ]; then \
# if we have leftovers from building, let's purge them (including extra, unnecessary build deps)
apt-get purge -y --auto-remove; \
rm -rf "$tempDir" /etc/apt/sources.list.d/temp.list; \
fi; \
\
# some of the steps above generate a lot of "*.pyc" files (and setting "PYTHONDONTWRITEBYTECODE" beforehand doesn't propagate properly for some reason), so we clean them up manually (as long as they aren't owned by a package)
find /usr -name '*.pyc' -type f -exec bash -c 'for pyc; do dpkg -S "$pyc" &> /dev/null || rm -vf "$pyc"; done' -- '{}' +
# make the sample config easier to munge (and "correct by default")
RUN set -eux; \
dpkg-divert --add --rename --divert "/usr/share/postgresql/postgresql.conf.sample.dpkg" "/usr/share/postgresql/$PG_MAJOR/postgresql.conf.sample"; \
cp -v /usr/share/postgresql/postgresql.conf.sample.dpkg /usr/share/postgresql/postgresql.conf.sample; \
ln -sv ../postgresql.conf.sample "/usr/share/postgresql/$PG_MAJOR/"; \
sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/share/postgresql/postgresql.conf.sample; \
grep -F "listen_addresses = '*'" /usr/share/postgresql/postgresql.conf.sample
RUN mkdir -p /var/run/postgresql && chown -R postgres:postgres /var/run/postgresql && chmod 2777 /var/run/postgresql
ENV PATH $PATH:/usr/lib/postgresql/$PG_MAJOR/bin
ENV PGDATA /var/lib/postgresql/data
# this 777 will be replaced by 700 at runtime (allows semi-arbitrary "--user" values)
RUN mkdir -p "$PGDATA" && chown -R postgres:postgres "$PGDATA" && chmod 777 "$PGDATA"
VOLUME /var/lib/postgresql/data
COPY docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh / # backwards compat
ENTRYPOINT ["docker-entrypoint.sh"]
EXPOSE 5432
CMD ["postgres"]