[discourse-web] Revert hardcoding a specific tag as we then cannot cherry-pick random fixes from the tests-passed br

[Andrea Veri <averi src gnome org>]

commit 233831965c26552b6e02231bb39f7bfc264f08f8
Author: Andrea Veri <averi redhat com>
Date:   Tue Dec 10 12:24:17 2019 +0100

    Revert hardcoding a specific tag as we then cannot cherry-pick random fixes from the tests-passed branch

 Dockerfile | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/Dockerfile b/Dockerfile
index 401a124..862e156 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -31,12 +31,10 @@ RUN apt update && \
 ### Set up Discourse ##################################
 #   - So we can overrride it with --build_arg
 ARG DISCOURSE_VERS='tests-passed'
-ARG DISCOURSE_TAGS='v2.4.0.beta8'
-ENV DISCOURSE_RELEASE=$DISCOURSE_VERS DISCOURSE_TAG=$DISCOURSE_TAGS RAILS_ENV=production 
RAILS_ROOT=/discourse HOME=/discourse
+ENV DISCOURSE_RELEASE=$DISCOURSE_VERS RAILS_ENV=production RAILS_ROOT=/discourse HOME=/discourse
 
 RUN mkdir -p discourse && \
-    git clone --depth=1 --single-branch --branch "$DISCOURSE_RELEASE"  
https://github.com/discourse/discourse.git /discourse && \
-    cd /discourse && git fetch --tags && git checkout tags/$DISCOURSE_TAG
+    git clone --depth=1 --single-branch --branch "$DISCOURSE_RELEASE"  
https://github.com/discourse/discourse.git /discourse
 
 WORKDIR $HOME