UPD: so many improvements :)

container-files/docker-entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# Disable CustomLog, that is configured by default in upstream.
+sed -i -e 's:^\(\s*\)\(CustomLog\s\s*"logs/access_log"\):\1# Disabled by /docker-entrypoint.sh # \2:' \
+	/etc/httpd/conf/httpd.conf
+
+# Remove left-overs from an incomplete shutdown previously.
+rm -rf /run/httpd/* /tmp/httpd*
+
+if test "X${SERVER_ADMIN}" != "X" ; then
+	set -- -c "ServerAdmin $SERVER_ADMIN" "$@"
+fi
+if test "X${LOG_LEVEL}" != "X" ; then
+	set -- -c "LogLevel $LOG_LEVEL" "$@"
+fi
+exec /usr/sbin/httpd -DFOREGROUND "$@"