Resolve "Increase readability of Proxy URLs"

Closes #22 (closed)

Dockerfile

-FROM alpine:3.11.3
+FROM alpine:3
 
 RUN apk add --update \
     nginx \
@@ -21,7 +21,8 @@ RUN apk add --update \
     php7-dom \
     php7-fileinfo \
     php7-redis \
-    && rm -rf /var/cache/apk/*
+    && rm -rf /var/cache/apk/* \
+    && update-ca-certificates
 
 WORKDIR /html