如果是/ bin / sh，则为一个衬垫

Question

我确实意识到我已经为bash编写了代码。但是在这种情况下它使用/ bin / sh。我该如何重写呢。

此：

Step 8/17 : RUN if [ "$KEY" == "" ] ; then echo "SSH key is not set, aborting" ; exit 1 ; else echo "SSH key is set" ; fi

结果：

/bin/sh: 1: [: unexpected operator

而且：

Step 7/15 : RUN if test "$KEY" == "" ; then echo "SSH key is not set, aborting" ; exit 1 ; else echo "SSH key is set" ; fi

结果：

/bin/sh: 1: test: unexpected operator