Fix a few minor issues with docker-entrypoint.sh for 8.0.11

Author: tianon

8.0/Dockerfile

@@ -44,7 +44,7 @@ RUN set -ex; \
 	apt-key list > /dev/null
 
 ENV MYSQL_MAJOR 8.0
-ENV MYSQL_VERSION 8.0.4-rc-1debian9
+ENV MYSQL_VERSION 8.0.11-1debian9
 
 RUN echo "deb http://repo.mysql.com/apt/debian/ stretch mysql-${MYSQL_MAJOR}" > /etc/apt/sources.list.d/mysql.list
 

8.0/docker-entrypoint.sh

@@ -59,7 +59,9 @@ _check_config() {
 # latter only show values present in config files, and not server defaults
 _get_config() {
 	local conf="$1"; shift
-	"$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null | awk '$1 == "'"$conf"'" { print $2; exit }'
+	"$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
+		| awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
+	# match "datadir      /some/path with/spaces in/it here" but not "--xyz=abc\n     datadir (xyz)"
 }
 
 # allow the container to be started with `--user`
@@ -143,7 +145,7 @@ if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
 			--  or products like mysql-fabric won't work
 			SET @@SESSION.SQL_LOG_BIN=0;
 
-			SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
+			ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
 			GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
 			${rootCreate}
 			DROP DATABASE IF EXISTS test ;