├── Dockerfile ├── LICENSE ├── README.md ├── alpine ├── Dockerfile └── build-alpine.sh ├── vendor └── docker └── wrapdocker /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM ubuntu:14.04.4 2 | MAINTAINER Bill Maxwell @cloudnautique 3 | 4 | RUN apt-get update && apt-get install -y \ 5 | apt-transport-https \ 6 | ca-certificates \ 7 | lxc \ 8 | iptables \ 9 | git \ 10 | curl \ 11 | xz-utils \ 12 | wget \ 13 | gcc \ 14 | libc6-dev \ 15 | make \ 16 | --no-install-recommends \ 17 | && rm -rf /var/lib/apt/lists/* 18 | 19 | RUN locale-gen en_US.utf8 20 | ENV LANG en_US.UTF-8 21 | ENV LANGUAGE en_US:en 22 | ENV LC_ALL en_US.UTF-8 23 | ENV TERM linux 24 | ENV GOLANG_VERSION 1.4.2 25 | 26 | ADD ./wrapdocker /usr/local/bin/wrapdocker 27 | ADD https://get.docker.com/builds/Linux/x86_64/docker-1.10.3 /usr/bin/docker 28 | RUN chmod +x /usr/bin/docker 29 | 30 | RUN curl -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \ 31 | | tar -v -C /usr/src -xz && \ 32 | cd /usr/src/go/src && ./make.bash --no-clean 2>&1 33 | 34 | ENV PATH /usr/src/go/bin:$PATH 35 | 36 | VOLUME /scratch 37 | VOLUME /var/lib/docker 38 | 39 | CMD [ "/bin/bash" ] 40 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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However, in accepting such obligations, You may act only 171 | on Your own behalf and on Your sole responsibility, not on behalf 172 | of any other Contributor, and only if You agree to indemnify, 173 | defend, and hold each Contributor harmless for any liability 174 | incurred by, or claims asserted against, such Contributor by reason 175 | of your accepting any such warranty or additional liability. 176 | 177 | END OF TERMS AND CONDITIONS 178 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Docker in Docker template. 2 | ## Usage 3 | 4 | In order for you to be able to run docker inside the container, you must run in privileged mode. 5 | This is built off of jpetazzo/dind image. 6 | 7 | ``` 8 | docker run --privileged rancher/docker-dind-base 9 | ``` 10 | 11 | If a Command is passed in on startup, then run the following: 12 | 13 | ``` 14 | /usr/local/bin/wrapdocker 15 | ``` 16 | 17 | before trying to start any containers within docker. 18 | 19 | ## Contact 20 | For bugs, questions, comments, corrections, suggestions, etc., open an issue in 21 | [rancher/rancher](//github.com/rancher/rancher/issues) with a title starting with `[docker-dind-base] `. 22 | 23 | Or just [click here](//github.com/rancher/rancher/issues/new?title=%5Bdocker-dind-base%5D%20) to create a new issue. 24 | 25 | # License 26 | Copyright (c) 2014-2015 [Rancher Labs, Inc.](http://rancher.com) 27 | 28 | Licensed under the Apache License, Version 2.0 (the "License"); 29 | you may not use this file except in compliance with the License. 30 | You may obtain a copy of the License at 31 | 32 | [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0) 33 | 34 | Unless required by applicable law or agreed to in writing, software 35 | distributed under the License is distributed on an "AS IS" BASIS, 36 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 37 | See the License for the specific language governing permissions and 38 | limitations under the License. 39 | -------------------------------------------------------------------------------- /alpine/Dockerfile: -------------------------------------------------------------------------------- 1 | FROM rancher/socat-docker:v0.2.0 2 | 3 | RUN apk add --update iptables ca-certificates lxc e2fsprogs && \ 4 | rm -rf /var/cache/apk/* 5 | 6 | ADD ./wrapdocker /usr/local/bin/wrapdocker 7 | ADD ./docker /usr/bin/docker 8 | 9 | CMD [ "/bin/bash" ] 10 | -------------------------------------------------------------------------------- /alpine/build-alpine.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | cd $(dirname $0) 4 | 5 | cp ../wrapdocker ./ 6 | cp ../vendor/docker ./ 7 | 8 | : {TAG:-dev} 9 | 10 | docker build --rm -t rancher/dind-alpine:${TAG} . 11 | 12 | rm ./wrapdocker 13 | rm ./docker 14 | -------------------------------------------------------------------------------- /vendor/docker: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rancher/docker-dind-base/93d7f18153669ac90f93cc97aa071267ed22365f/vendor/docker -------------------------------------------------------------------------------- /wrapdocker: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | # First, make sure that cgroups are mounted correctly. 4 | CGROUP=/sys/fs/cgroup 5 | : {LOG:=stdio} 6 | 7 | [ -d $CGROUP ] || 8 | mkdir $CGROUP 9 | 10 | mountpoint -q $CGROUP || 11 | mount -n -t tmpfs -o uid=0,gid=0,mode=0755 cgroup $CGROUP || { 12 | echo "Could not make a tmpfs mount. Did you use -privileged?" 13 | exit 1 14 | } 15 | 16 | if [ -d /sys/kernel/security ] && ! mountpoint -q /sys/kernel/security 17 | then 18 | mount -t securityfs none /sys/kernel/security || { 19 | echo "Could not mount /sys/kernel/security." 20 | echo "AppArmor detection and -privileged mode might break." 21 | } 22 | fi 23 | 24 | # Mount the cgroup hierarchies exactly as they are in the parent system. 25 | for SUBSYS in $(cut -d: -f2 /proc/1/cgroup) 26 | do 27 | [ -d $CGROUP/$SUBSYS ] || mkdir $CGROUP/$SUBSYS 28 | mountpoint -q $CGROUP/$SUBSYS || 29 | mount -n -t cgroup -o $SUBSYS cgroup $CGROUP/$SUBSYS 30 | 31 | # The two following sections address a bug which manifests itself 32 | # by a cryptic "lxc-start: no ns_cgroup option specified" when 33 | # trying to start containers withina container. 34 | # The bug seems to appear when the cgroup hierarchies are not 35 | # mounted on the exact same directories in the host, and in the 36 | # container. 37 | 38 | # Named, control-less cgroups are mounted with "-o name=foo" 39 | # (and appear as such under /proc//cgroup) but are usually 40 | # mounted on a directory named "foo" (without the "name=" prefix). 41 | # Systemd and OpenRC (and possibly others) both create such a 42 | # cgroup. To avoid the aforementioned bug, we symlink "foo" to 43 | # "name=foo". This shouldn't have any adverse effect. 44 | echo $SUBSYS | grep -q ^name= && { 45 | NAME=$(echo $SUBSYS | sed s/^name=//) 46 | ln -s $SUBSYS $CGROUP/$NAME 47 | } 48 | 49 | # Likewise, on at least one system, it has been reported that 50 | # systemd would mount the CPU and CPU accounting controllers 51 | # (respectively "cpu" and "cpuacct") with "-o cpuacct,cpu" 52 | # but on a directory called "cpu,cpuacct" (note the inversion 53 | # in the order of the groups). This tries to work around it. 54 | [ $SUBSYS = cpuacct,cpu ] && ln -s $SUBSYS $CGROUP/cpu,cpuacct 55 | done 56 | 57 | # Note: as I write those lines, the LXC userland tools cannot setup 58 | # a "sub-container" properly if the "devices" cgroup is not in its 59 | # own hierarchy. Let's detect this and issue a warning. 60 | grep -q :devices: /proc/1/cgroup || 61 | echo "WARNING: the 'devices' cgroup should be in its own hierarchy." 62 | grep -qw devices /proc/1/cgroup || 63 | echo "WARNING: it looks like the 'devices' cgroup is not mounted." 64 | 65 | # Now, close extraneous file descriptors. 66 | pushd /proc/self/fd >/dev/null 67 | for FD in * 68 | do 69 | case "$FD" in 70 | # Keep stdin/stdout/stderr 71 | [012]) 72 | ;; 73 | # Nuke everything else 74 | *) 75 | eval exec "$FD>&-" 76 | ;; 77 | esac 78 | done 79 | popd >/dev/null 80 | 81 | 82 | # If a pidfile is still around (for example after a container restart), 83 | # delete it so that docker can start. 84 | rm -rf /var/run/docker.pid 85 | 86 | if [ -z ${DOCKER_DRIVER} ]; then 87 | export DOCKER_DRIVER=vfs 88 | for i in overlay aufs; do 89 | if grep -q $i /proc/filesystems; then 90 | export DOCKER_DRIVER=$i 91 | break 92 | fi 93 | done 94 | fi 95 | 96 | # Start Docker Daemon 97 | docker daemon $DOCKER_DAEMON_ARGS & 98 | 99 | # Verify that it started 100 | for ((i=0;i<20;i++)) 101 | do 102 | if docker ps 2>/dev/null; then 103 | break 104 | else 105 | sleep .5 106 | fi 107 | done 108 | 109 | if [ $i -lt 20 ] 110 | then 111 | exit 0 112 | else 113 | echo "Docker can not be reached" 1>&2 114 | exit 1 115 | fi 116 | --------------------------------------------------------------------------------