Issue #266 - Upgrade Firefox to version 68.7 ESR

Author: ppodgorsek

Dockerfile

@@ -28,7 +28,7 @@ ENV ALPINE_GLIBC 2.31-r0
 ENV CHROMIUM_VERSION 80.0
 ENV DATABASE_LIBRARY_VERSION 1.2
 ENV FAKER_VERSION 5.0.0
-ENV FIREFOX_VERSION 75.0
+ENV FIREFOX_VERSION 68.7
 ENV FTP_LIBRARY_VERSION 1.9
 ENV GECKO_DRIVER_VERSION v0.26.0
 ENV IMAP_LIBRARY_VERSION 0.3.0
@@ -58,7 +58,7 @@ RUN apk update \
   && apk --no-cache add \
     "chromium~$CHROMIUM_VERSION" \
     "chromium-chromedriver~$CHROMIUM_VERSION" \
-    "firefox~$FIREFOX_VERSION" \
+    "firefox-esr~$FIREFOX_VERSION" \
     xauth \
     "xvfb-run~$XVFB_VERSION" \
   && mv /usr/lib/chromium/chrome /usr/lib/chromium/chrome-original \