Resolve "More env variables for Azure deployment"

Closes #364

dbrepo-metadata-db/Dockerfile

@@ -6,10 +6,4 @@ ENV METADATA_PASSWORD=dbrepo
 ENV MARIADB_DATABASE="${METADATA_DB}"
 ENV MARIADB_ROOT_PASSWORD="${METADATA_PASSWORD}"
 
-# force lower-case table names
-COPY ./51-dbrepo.cnf /opt/bitnami/mariadb/conf/my_custom.cnf
-
-# Scripts are copied to /docker-entrypoint-initdb.d/ in docker-compose from analyze service
-HEALTHCHECK --interval=10s --timeout=5s --retries=12 CMD mysqladmin ping --user="$METADATA_USERNAME" --password="$METADATA_PASSWORD" --silent
-
 COPY ./setup-schema.sql /docker-entrypoint-initdb.d/setup-schema.sql
\ No newline at end of file