Move builder-scripts/ COPY command

Move the command before Nextclade downloads since it is a "setup" step.
This keeps download commands closer to each other, and allows Nextclade
download commands to use scripts if needed in the future.

Author: victorlin

Dockerfile

@@ -142,6 +142,9 @@ RUN pip3 install git+https://github.com/cov-lineages/pango-designation.git@19d9a
 # docker build --build-arg CACHE_DATE="$(date)"
 ARG CACHE_DATE
 
+# Add helper scripts
+COPY builder-scripts/ /builder-scripts/
+
 # Nextclade/Nextalign v2 are downloaded directly but using the latest version,
 # so they belong after CACHE_DATE (unlike Nextclade/Nextalign v1).
 
@@ -155,9 +158,6 @@ RUN curl -fsSL -o /final/bin/nextalign2 https://github.com/nextstrain/nextclade/
 RUN curl -fsSL -o /final/bin/nextclade2 https://github.com/nextstrain/nextclade/releases/latest/download/nextclade-x86_64-unknown-linux-gnu \
  && ln -sv nextclade2 /final/bin/nextclade
 
-# Add helper scripts
-COPY builder-scripts/ /builder-scripts/
-
 # Fauna
 RUN /builder-scripts/download-repo https://github.com/nextstrain/fauna master /nextstrain/fauna