Switch to Alpine base image

This brings the image size down from 278.3MB to 100.2MB

Dockerfile

@@ -1,25 +1,21 @@
-FROM ubuntu
+FROM alpine:3.4
 MAINTAINER Christian Lück <christian@lueck.tv>
 
-RUN DEBIAN_FRONTEND=noninteractive apt-get update && apt-get install -y \
-  nginx supervisor php5-fpm php5-cli php5-curl php5-gd php5-json \
-  php5-pgsql php5-mysql php5-mcrypt && apt-get clean && rm -rf /var/lib/apt/lists/*
-
-# enable the mcrypt module
-RUN php5enmod mcrypt
+RUN apk add --update nginx supervisor php5-fpm php5-cli php5-curl php5-gd php5-json php5-dom php5-pcntl php5-posix \
+  php5-pgsql php5-mysql php5-mcrypt php5-pdo php5-pdo_pgsql php5-pdo_mysql ca-certificates && \
+  rm -rf /var/cache/apk/*
 
 # add ttrss as the only nginx site
-ADD ttrss.nginx.conf /etc/nginx/sites-available/ttrss
-RUN ln -s /etc/nginx/sites-available/ttrss /etc/nginx/sites-enabled/ttrss
-RUN rm /etc/nginx/sites-enabled/default
+ADD ttrss.nginx.conf /etc/nginx/nginx.conf
 
 # install ttrss and patch configuration
 WORKDIR /var/www
-RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y curl --no-install-recommends && rm -rf /var/lib/apt/lists/* \
+RUN apk add --update --virtual build-dependencies curl tar \
     && curl -SL https://tt-rss.org/gitlab/fox/tt-rss/repository/archive.tar.gz?ref=master | tar xzC /var/www --strip-components 1 \
-    && apt-get purge -y --auto-remove curl \
-    && chown www-data:www-data -R /var/www
-RUN cp config.php-dist config.php
+    && apk del build-dependencies \
+    && rm -rf /var/cache/apk/* \
+    && cp config.php-dist config.php \
+    && chown nobody:nginx -R /var/www
 
 # expose only nginx HTTP port
 EXPOSE 80

supervisord.conf

@@ -1,15 +1,15 @@
 [supervisord]
 nodaemon=true
 
-[program:php5-fpm]
-command=/usr/sbin/php5-fpm --nodaemonize
+[program:php-fpm]
+command=/usr/bin/php-fpm --nodaemonize
 
 [program:nginx]
-command=/usr/sbin/nginx -g "daemon off;"
+command=/usr/sbin/nginx
 
 [program:ttrss-update-daemon]
 command=/usr/bin/php /var/www/update_daemon2.php
-user=www-data
+user=nobody
 stdout_logfile=/tmp/%(program_name)s.stdout
 stderr_logfile=/tmp/%(program_name)s.stderr
 

ttrss.nginx.conf

@@ -1,18 +1,35 @@
-server {
-	listen 80;
-	root /var/www;
+daemon           off;
+pid              /run/nginx.pid;
+worker_processes 1;
 
-	index index.php index.html;
+events {
+    worker_connections 1024;
+}
 
-	location / {
-		try_files $uri $uri/ =404;
-	}
+http {
+    include      mime.types;
+    default_type application/octet-stream;
 
-	location ~ \.php$ {
-		fastcgi_split_path_info ^(.+\.php)(/.+)$;
-		fastcgi_pass unix:/var/run/php5-fpm.sock;
-		fastcgi_index index.php;
-		include fastcgi_params;
-	}
-}
+    sendfile          on;
+    keepalive_timeout 65;
+    gzip              on;
+
+    server {
+        listen 80;
+        root /var/www;
 
+        index index.php index.html;
+
+        location / {
+            try_files $uri $uri/ =404;
+        }
+
+        location ~ \.php$ {
+            fastcgi_split_path_info ^(.+\.php)(/.+)$;
+            fastcgi_pass 127.0.0.1:9000;
+            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
+            fastcgi_index index.php;
+            include fastcgi_params;
+        }
+    }
+}