/dockerfile-snippets

dockerfile-snippets

Edit a config file inline w/ sed (https://registry.hub.docker.com/u/jprjr/php-fpm/dockerfile/)

RUN sed -i 's/;extension=gd.so/extension=gd.so/g' /etc/php/php.ini RUN sed -i '/^listen/c
listen = 0.0.0.0:9000' /etc/php/php-fpm.conf

Edit an entire directory with find and exec sed (from official apache)

RUN find "$APACHE_CONFDIR" -type f -exec sed -ri '
s!^(\sCustomLog)\s+\S+!\1 /proc/self/fd/1!g;
s!^(\sErrorLog)\s+\S+!\1 /proc/self/fd/2!g;
' '{}' ';'

RUN touch /var/log/php-fpm.log

RUN chown -R http /var/log/php-fpm.log /run/php-fpm

USER http

From official postgres

add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added

RUN groupadd -r postgres && useradd -r -g postgres postgres

make the "en_US.UTF-8" locale so postgres will be utf-8 enabled by default

RUN apt-get update && apt-get install -y 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

Sed editing of a config file inline with package installs

RUN apt-get update
&& apt-get install -y postgresql-common
&& sed -ri 's/#(create_main_cluster) .$/\1 = false/' /etc/postgresql-common/createcluster.conf
&& apt-get install -y
postgresql-$PG_MAJOR=$PG_VERSION
postgresql-contrib-$PG_MAJOR=$PG_VERSION
&& rm -rf /var/lib/apt/lists/

mkdir + chown in one step

RUN mkdir -p /var/run/postgresql && chown -R postgres /var/run/postgresql

official golang ENV PATH /usr/src/go/bin:$PATH

official python

remove several traces of debian python

RUN apt-get purge -y python python-minimal python2.7-minimal

from official redis

save buildDeps for late; set -x for debug mode

RUN buildDeps='gcc libc6-dev make';
set -x;
apt-get update && apt-get install -y $buildDeps --no-install-recommends
&& apt-get purge -y $buildDeps \

See here for version pinning for cache-busting: https://github.com/nginxinc/docker-nginx/commit/d5b14ea77879ca2b07293eacd16bbc20a0aa79f0