fix: 移除上次pr新增的不必要的环境变量，这样就不必再调整这个名称了

docker/Dockerfile

@@ -1,18 +1,13 @@
 FROM node:lts-alpine
 ARG QL_MAINTAINER="whyour"
 LABEL maintainer="${QL_MAINTAINER}"
-ARG QL_URL=http://localhost:5600
-ARG QL_REPOSITORY_URL=https://github.com/${QL_MAINTAINER}/qinglong.git
+ARG QL_URL=https://github.com/${QL_MAINTAINER}/qinglong.git
 ARG QL_BRANCH=master
 ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
     LANG=zh_CN.UTF-8 \
     SHELL=/bin/bash \
     PS1="\u@\h:\w \$ " \
-    QL_DIR=/ql \
-    QL_URL=${QL_URL} \
-    QL_MAINTAINER=${QL_MAINTAINER} \
-    QL_REPOSITORY_URL=${QL_REPOSITORY_URL} \
-    QL_BRANCH=${QL_BRANCH}
+    QL_DIR=/ql
 WORKDIR ${QL_DIR}
 RUN set -x \
     && sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories \
@@ -36,7 +31,7 @@ RUN set -x \
     && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
     && echo "Asia/Shanghai" > /etc/timezone \
     && touch ~/.bashrc \
-    && git clone -b ${QL_BRANCH} ${QL_REPOSITORY_URL} ${QL_DIR} \
+    && git clone -b ${QL_BRANCH} ${QL_URL} ${QL_DIR} \
     && git config --global user.email "qinglong@@users.noreply.github.com" \
     && git config --global user.name "qinglong" \
     && cd ${QL_DIR} \