docker: add alpine,debian,ubuntu test images

Relates to shaarli#843

Added:
- Makefile target to run commands in a Docker test context
- Docker images to run Shaarli test suites:
  - Alpine 3.6
  - Debian 8 & 9
  - Ubuntu 16.04

TODO:
- Add/update usage documentation

Signed-off-by: VirtualTam <virtualtam@flibidi.net>

Makefile

@@ -18,6 +18,16 @@ PHP_COMMA_SOURCE = index.php,application,tests,plugins
 
 all: static_analysis_summary check_permissions test
 
+##
+# Docker test adapter
+#
+# Shaarli sources and vendored libraries are copied from a shared volume
+# to a user-owned directory to enable running tests as a non-root user.
+##
+docker_%:
+	rsync -az /shaarli/ ~/shaarli/
+	cd ~/shaarli && make $*
+
 ##
 # Concise status of the project
 # These targets are non-blocking: || exit 0
@@ -206,4 +216,3 @@ htmlpages:
 	rm -r venv
 
 doc_html: authors htmlpages
-

docker/test/alpine36/Dockerfile

@@ -0,0 +1,34 @@
+FROM alpine:3.6
+MAINTAINER Shaarli Community
+
+RUN apk --update --no-cache add \
+        ca-certificates \
+        curl \
+        make \
+        php7 \
+        php7-ctype \
+        php7-curl \
+        php7-dom \
+        php7-gd \
+        php7-iconv \
+        php7-intl \
+        php7-json \
+        php7-mbstring \
+        php7-openssl \
+        php7-phar \
+        php7-session \
+        php7-simplexml \
+        php7-tokenizer \
+        php7-xdebug \
+        php7-xml \
+        php7-zlib \
+        rsync
+
+RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
+
+RUN mkdir /shaarli
+WORKDIR /shaarli
+VOLUME /shaarli
+
+ENTRYPOINT ["make"]
+CMD []

docker/test/alpine36/IMAGE.md

@@ -0,0 +1,5 @@
+## shaarli:latest
+- [Debian 8 Jessie](https://hub.docker.com/_/debian/)
+- [PHP5-FPM](http://php-fpm.org/)
+- [Nginx](http://nginx.org/)
+- [Shaarli](https://github.com/shaarli/Shaarli)

docker/test/debian8/Dockerfile

@@ -0,0 +1,35 @@
+FROM debian:jessie
+MAINTAINER Shaarli Community
+
+ENV TERM dumb
+ENV DEBIAN_FRONTEND noninteractive
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+       ca-certificates \
+       curl \
+       locales \
+       make \
+       php5 \
+       php5-curl \
+       php5-gd \
+       php5-intl \
+       php5-xdebug \
+       rsync \
+    && apt-get clean
+
+RUN locale-gen en_US.UTF-8 \
+    && locale-gen de_DE.UTF-8 \
+    && locale-gen fr_FR.UTF-8
+
+ADD https://getcomposer.org/composer.phar /usr/local/bin/composer
+RUN chmod 755 /usr/local/bin/composer
+
+RUN mkdir /shaarli
+WORKDIR /shaarli
+VOLUME /shaarli
+
+ENTRYPOINT ["make"]
+CMD []

docker/test/debian9/Dockerfile

@@ -0,0 +1,36 @@
+FROM debian:stretch
+MAINTAINER Shaarli Community
+
+ENV TERM dumb
+ENV DEBIAN_FRONTEND noninteractive
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+       ca-certificates \
+       curl \
+       locales \
+       make \
+       php7.0 \
+       php7.0-curl \
+       php7.0-gd \
+       php7.0-intl \
+       php7.0-xml \
+       php-xdebug \
+       rsync \
+    && apt-get clean
+
+RUN locale-gen en_US.UTF-8 \
+    && locale-gen de_DE.UTF-8 \
+    && locale-gen fr_FR.UTF-8
+
+ADD https://getcomposer.org/composer.phar /usr/local/bin/composer
+RUN chmod 755 /usr/local/bin/composer
+
+RUN mkdir /shaarli
+WORKDIR /shaarli
+VOLUME /shaarli
+
+ENTRYPOINT ["make"]
+CMD []

docker/test/ubuntu16/Dockerfile

@@ -0,0 +1,36 @@
+FROM ubuntu:16.04
+MAINTAINER Shaarli Community
+
+ENV TERM dumb
+ENV DEBIAN_FRONTEND noninteractive
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US:en
+
+RUN apt-get update \
+    && apt-get install --no-install-recommends -y \
+       ca-certificates \
+       curl \
+       language-pack-de \
+       language-pack-en \
+       language-pack-fr \
+       locales \
+       make \
+       php7.0 \
+       php7.0-curl \
+       php7.0-gd \
+       php7.0-intl \
+       php7.0-xml \
+       php-xdebug \
+       rsync \
+    && apt-get clean
+
+ADD https://getcomposer.org/composer.phar /usr/local/bin/composer
+RUN chmod 755 /usr/local/bin/composer
+
+RUN useradd -m dev \
+    && mkdir /shaarli
+USER dev
+WORKDIR /shaarli
+
+ENTRYPOINT ["make"]
+CMD []