tt-rss running on alpine

same base image as rss-bridge, so that the whole environment is more
coherent

docker-compose.yml

@@ -20,11 +20,15 @@ services:
             dockerfile: ./docker/Dockerfile-tt-rss
         container_name: feedati_tt_rss
         volumes:
-            - ./tt-rss:/var/www/html
-            - ./docker/ttrss-config.php:/var/www/html/config.php:ro
+            - ./tt-rss:/app/public/
+            - ./docker/ttrss-config.php:/app/public/config.php:ro
         ports:
             - 8000:80
             - 9312:9312
+        environment:
+            - APACHE_SERVER_NAME=tt-rss
+            - PHP_DISPLAY_ERRORS=stdout
+            - PHP_DISPLAY_STARTUP_ERROR=1
 
     rss-bridge:
         image: feedati/rss-bridge:latest

docker/Dockerfile-tt-rss

@@ -1,10 +1,4 @@
-FROM php:7.2-apache
-
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update && apt-get install --no-install-recommends -y libpq-dev \
-    && docker-php-ext-configure pgsql -with-pgsql=/usr/local/pgsql \
-    && docker-php-ext-install pdo pgsql pdo_pgsql \
-    && docker-php-ext-enable pdo pgsql pdo_pgsql \
- && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-COPY tt-rss/* /var/www/html/
+FROM ulsmith/alpine-apache-php7
+RUN apk add --update php7-pgsql php7-fileinfo && apk del php7-pdo_mysql php7-pdo_odbc php7-pdo_sqlite db php7-redis php7-ftp && rm -rf /var/cache/apk/
+COPY tt-rss/* /app/public/
+RUN chown -R apache:root /app/public