docker: switch to Alpine Linux for the master image

Relates to https://github.com/shaarli/Shaarli/issues/843

Changed:
- switch base image from Debian:Jessie to Alpine:3.6
- switch to PHP 7.1
- switch from supervisord to s6 to manage services

See:
- https://alpinelinux.org/
- https://wiki.alpinelinux.org/wiki/Nginx_with_PHP
- http://www.skarnet.org/software/s6/
  - http://www.skarnet.org/software/s6/s6-svscan.html
  - http://www.skarnet.org/software/s6/s6-svc.html
  - http://www.skarnet.org/software/s6/s6-svstat.html

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

1 files changed, 72 insertions, 0 deletions

diff --git a/docker/stable/nginx.conf b/docker/stable/nginx.conf
new file mode 100644
index 00000000..e8754d9b
--- /dev/null
+++ b/docker/stable/nginx.conf
@@ -0,0 +1,72 @@
+user www-data www-data;
+daemon off;
+worker_processes 4;
+
+events {
+    worker_connections  768;
+}
+
+http {
+    include            mime.types;
+    default_type       application/octet-stream;
+    keepalive_timeout  20;
+
+    client_max_body_size 10m;
+
+    index index.html index.php;
+
+    server {
+        listen       80;
+        root         /var/www/shaarli;
+
+        access_log  /var/log/nginx/shaarli.access.log;
+        error_log   /var/log/nginx/shaarli.error.log;
+
+        location ~ /\. {
+            # deny access to dotfiles
+            access_log off;
+            log_not_found off;
+            deny all;
+        }
+        
+        location ~ ~$ {
+            # deny access to temp editor files, e.g. "script.php~"
+            access_log off;
+            log_not_found off;
+            deny all;
+        }
+
+        location ~* \.(?:ico|css|js|gif|jpe?g|png)$ {
+            # cache static assets
+            expires    max;
+            add_header Pragma public;
+            add_header Cache-Control "public, must-revalidate, proxy-revalidate";
+        }
+
+        location = /favicon.ico {
+            # serve the Shaarli favicon from its custom location
+            alias /var/www/shaarli/images/favicon.ico;
+        }
+
+        location / {
+            # Slim - rewrite URLs
+            try_files $uri /index.php$is_args$args;
+        }
+
+        location ~ (index)\.php$ {
+            # Slim - split URL path into (script_filename, path_info)
+            try_files $uri =404;
+            fastcgi_split_path_info ^(.+\.php)(/.+)$;
+
+            # filter and proxy PHP requests to PHP-FPM
+            fastcgi_pass   unix:/var/run/php5-fpm.sock;
+            fastcgi_index  index.php;
+            include        fastcgi.conf;
+        }
+
+        location ~ \.php$ {
+            # deny access to all other PHP scripts
+            deny all;
+        }
+    }
+}