Update DALOREF to use 'master' branch in Dockerfile

Dockerfile

@@ -4,7 +4,7 @@
 # Stage 1: fetch source (pin to tag/sha)
 ############################################
 FROM alpine:3.20 AS source
-ARG DALOREF=tags/1.3           # <-- pin to a released tag or a specific commit sha
+ARG DALOREF=master         # <-- pin to a released tag or a specific commit sha
 ARG MIRROR_URL=https://gitea.portal.tulsacounty.org/external-repos/daloradius.git
 RUN apk add --no-cache git && \
     git clone --depth=1 --branch ${DALOREF} ${MIRROR_URL} /src