docker - Docker 容器中的别名命令不起作用

Question

我正在尝试为 gcc 命令创建别名，例如 alias gcc='gcc -march=native'，因此在执行 gcc 时始终添加标志 -march。但它不起作用，执行时出现错误gcc -v gcc: error: missing argument to '-march='：

Using built-in specs.
gcc: error: missing argument to '-march='
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)

这是我尝试构建的 Dockerfile：

FROM centos:7
RUN yum update -y

RUN yum install -y python3 && pip3 install --upgrade pip
RUN yum install -y postgresql gcc gcc-c++ python3-devel unixODBC-devel libxml2-devel mysql-devel
RUN yum clean all

RUN export WHITELIST_IPADDR=0.0.0.0
RUN export LC_ALL=en_US.utf8
RUN export LANG=en_US.UTF-8
RUN LANGUAGE=en_US.UTF-8

COPY requirements.txt .
RUN alias gcc='gcc -march=native'
CMD gcc -v
#RUN pip3 install -r requirements.txt

据我了解，线路RUN alias gcc='gcc -march=native'不起作用。

标签： dockercentos