Use minimum php version by default

docker/app/Dockerfile

@@ -16,19 +16,19 @@ RUN add-apt-repository ppa:nginx/stable \
     && apt-get update \
     && apt-get install --no-install-recommends -y \
         nginx \
-        php7.1-fpm \
-        php7.1-cli \
-        php7.1-xdebug \
-        php7.1-pdo \
-        php7.1-pdo-mysql \
-        php7.1-sqlite3 \
-        php7.1-xml \
-        php7.1-mbstring \
-        php7.1-tokenizer \
-        php7.1-zip \
-        php7.1-mcrypt \
-        php7.1-gd \
-        php7.1-curl \
+        php7.0-fpm \
+        php7.0-cli \
+        php7.0-xdebug \
+        php7.0-pdo \
+        php7.0-pdo-mysql \
+        php7.0-sqlite3 \
+        php7.0-xml \
+        php7.0-mbstring \
+        php7.0-tokenizer \
+        php7.0-zip \
+        php7.0-mcrypt \
+        php7.0-gd \
+        php7.0-curl \
         curl \
     && mkdir /run/php \
     && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer \
@@ -38,7 +38,7 @@ RUN add-apt-repository ppa:nginx/stable \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
 COPY default /etc/nginx/sites-enabled/default
-COPY php-fpm.conf /etc/php/7.1/fpm/php-fpm.conf
+COPY php-fpm.conf /etc/php/7.0/fpm/php-fpm.conf
 COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
 
 RUN mkdir /tmp/certgen

docker/app/default

@@ -25,7 +25,7 @@ server {
     }
     location ~ \.php$ {
         include snippets/fastcgi-php.conf;
-        fastcgi_pass unix:/run/php/php7.1-fpm.sock;
+        fastcgi_pass unix:/run/php/php7.0-fpm.sock;
     }
     location ~ /\.ht {
         deny all;

docker/app/php-fpm.conf

@@ -14,7 +14,7 @@
 ; Pid file
 ; Note: the default prefix is /var
 ; Default Value: none
-pid = /run/php/php7.1-fpm.pid
+pid = /run/php/php7.0-fpm.pid
 
 ; Error log file
 ; If it's set to "syslog", log is sent to syslogd instead of being written
@@ -122,4 +122,4 @@ daemonize = no
 ; Relative path can also be used. They will be prefixed by:
 ;  - the global prefix if it's been set (-p argument)
 ;  - /usr otherwise
-include=/etc/php/7.1/fpm/pool.d/*.conf
\ No newline at end of file
+include=/etc/php/7.0/fpm/pool.d/*.conf

docker/app/supervisord.conf

@@ -9,7 +9,7 @@ stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 
 [program:php-fpm]
-command=php-fpm7.1
+command=php-fpm7.0
 stdout_logfile=/dev/stdout
 stdout_logfile_maxbytes=0
 stderr_logfile=/dev/stderr