add build script and php edits

Dockerfile

@@ -0,0 +1,39 @@
+# Base image
+ARG NEXTCLOUD_VER
+FROM nextcloud:${NEXTCLOUD_VER}-fpm
+
+# Install extra utilities
+
+RUN apt update && \
+    apt install -y --no-install-recommends \
+        sudo \
+        nano \
+        nfs-common \
+        libreoffice \
+        libreoffice-java-common \
+        default-jre \
+        imagemagick \
+        ghostscript \
+        smbclient \
+        iputils-ping \
+        ffmpeg \
+        procps \
+        supervisor && \
+    rm -rf /var/lib/apt/lists/* && \
+    mkdir -p /var/log/supervisord /var/run/supervisord
+
+# Add supervisord and ImageMagick configuration
+
+COPY supervisord.conf /
+COPY policy.xml /etc/ImageMagick-6/policy.xml
+
+# Set custom php configuration
+
+RUN echo "redis.session.locking_enabled=1" >> /usr/local/etc/php/conf.d/docker-php-ext-redis.ini && \
+    echo "redis.session.lock_retries=-1" >> /usr/local/etc/php/conf.d/docker-php-ext-redis.ini && \
+    echo "redis.session.lock_wait_time=10000" >> /usr/local/etc/php/conf.d/docker-php-ext-redis.ini && \
+    echo "session.gc_maxlifetime=86400" >> /usr/local/etc/php/conf.d/nextcloud.ini
+
+ENV NEXTCLOUD_UPDATE=1
+CMD ["/usr/bin/supervisord", "-c", "/supervisord.conf"]
+