有时会出现错误，但并非总是如此。
为什么会这样？
如果我再次运行它，那会没事的。
Step 3/14 : RUN apk add --no-cache git gcc mariadb-dev musl-dev linux-headers
---> Running in 591d6e97ff53
fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/community/x86_64/APKINDEX.tar.gz
(1/26) Installing binutils (2.32-r0)
(2/26) Installing gmp (6.1.2-r1)
(3/26) Installing isl (0.18-r0)
(4/26) Installing libgomp (8.3.0-r0)
(5/26) Installing libatomic (8.3.0-r0)
(6/26) Installing libgcc (8.3.0-r0)
(7/26) Installing mpfr3 (3.1.5-r1)
(8/26) Installing mpc1 (1.1.0-r0)
(9/26) Installing libstdc++ (8.3.0-r0)
(10/26) Installing gcc (8.3.0-r0)
ERROR: gcc-8.3.0-r0: BAD archive