├── cross-docker
└── README.md


/cross-docker:
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 1 | #!/bin/sh
 2 | 
 3 | if [ "$#" -lt 2 ]
 4 | then
 5 | 	printf "usage: $0 run [docker args]\n"
 6 | 	exit 1
 7 | fi
 8 | 
 9 | if [ $1 != "run" ]
10 | then
11 | 	printf "first argument must be run\n"
12 | 	exit 1
13 | fi
14 | 
15 | shift
16 | 
17 | if [ ! -f /tmp/qemu-static ]
18 | then
19 | 	mkdir -p /tmp/qemu-static
20 | 	(cd /tmp/qemu-static && docker run justincormack/debian-qemu-user tarup.sh | tar xf -)
21 | fi
22 | 
23 | for f in /tmp/qemu-static/qemu-*-static
24 | do
25 | 	ARCH="$(basename $f | sed 's/^qemu-//' | sed 's/-static$//')"
26 | 	VOLUMES="${VOLUMES} -v $f:/usr/bin/qemu-$ARCH-static"
27 | done
28 | 
29 | exec docker run ${VOLUMES} $*
30 | 


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/README.md:
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 1 | # cross-docker
 2 | 
 3 | This is a wrapper script to let you run different architecture containers with qemu-user
 4 | 
 5 | ## Prerequisites
 6 | 
 7 | You must be running in an environment with a working `binfmt_misc` setup. On Debian, if you
 8 | install the `qemu-user-static` package that should be sufficient. On other systems make
 9 | sure that the `binfmt_misc` pseudo filesystem is mounted (and configured).
10 | 
11 | ## How to use it
12 | 
13 | ```
14 | ./cross-docker run -it armv7/armhf-ubuntu uname -a
15 | Linux a6722bd5dabb 4.1.12 #1 SMP Mon Jan 4 11:26:42 UTC 2016 armv7l armv7l armv7l GNU/Linux
16 | ```
17 | 
18 | The first time you use it it will download the `qemu` binaries.
19 | 
20 | ## I am too lazy even to do that
21 | 
22 | If your docker container already has the `qemu` binary in, you do not need this, eg
23 | `docker run resin/armv7hf-debian uname -a` or `docker run justincormack/ppc64le-debian uname -a`.
24 | 
25 | ## Architectures
26 | 
27 | If your `binfmt_misc` is set up right the following architectures should be supported:
28 | 
29 | ```
30 | aarch64
31 | alpha
32 | arm
33 | armeb
34 | cris
35 | i386
36 | m68k
37 | microblaze
38 | microblazeel
39 | mips
40 | mips64
41 | mips64el
42 | mipsel
43 | mipsn32
44 | mipsn32el
45 | or32
46 | ppc
47 | ppc64
48 | ppc64abi32
49 | ppc64le
50 | s390x
51 | sh4
52 | sh4eb
53 | sparc
54 | sparc32plus
55 | sparc64
56 | unicore32
57 | x86_64
58 | ``` 
59 | 


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