Merge pull request #2202 from rn/lcow2

Add experimental support for LCOW

Makefile

@@ -20,7 +20,7 @@ endif
 
 PREFIX?=/usr/local/
 
-MOBY_COMMIT=4db06aa1732b44a8cadd9c8577df0aa5c716e701
+MOBY_COMMIT=a824287800b1871fde9859f5b2bd9009eaefa990
 MOBY_VERSION=0.0
 bin/moby: tmp_moby_bin.tar | bin
 	tar xf $<

blueprints/README.md

@@ -19,6 +19,7 @@ the [examples/](../examples/) directory.
 - Packet.net
 - ...
 
+
 ### Docker for Mac
 
 An initial blueprint for the open source components of Docker for Mac is available in [docker-for-mac](docker-for-mac). The blueprint has support for controlling `dockerd` from the host via `vsudd` and port forwarding with VPNKit. It requires HyperKit, VPNKit and a Docker client on the host to run. The easiest way to install these at the moment is to install a recent version of Docker for Mac.
@@ -42,3 +43,14 @@ $ docker -H unix://docker-for-mac-state/guest.00000947 ps
 CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
 ```
 
+### Linux Containers On Windows (LCOW)
+
+The [LCOW](./lcow.yml) file contains the blueprint for building a
+minimal Linux kernel and initrd for Linux Containers on
+Windows. Invoke it with `moby build lcow.yml` and you get a
+`lcow-kernel` and `lcow-initrd.img`. Rename `lcow-kernel` to
+`bootx64.efi` and `lcow-initrd.img` to `initrd.img` and then
+follow
+[these instructions](https://github.com/moby/moby/issues/33850). The
+process for creating the image is
+documented [here](https://github.com/Microsoft/opengcs).

blueprints/lcow.yml

@@ -0,0 +1,9 @@
+kernel:
+  image: linuxkit/kernel:4.11.9
+  cmdline: "console=ttyS0"
+  tar: none
+init:
+  - linuxkit/init-lcow:ae67df4c4cabb35aae06898cb94fe03972a172e9
+trust:
+  org:
+    - linuxkit

pkg/init-lcow/Dockerfile

@@ -0,0 +1,41 @@
+FROM linuxkit/alpine:3744607156e6b67e3e7d083b15be9e7722215e73 AS mirror
+RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
+RUN apk add --no-cache --initdb -p /out \
+    alpine-baselayout \
+    busybox \
+    e2fsprogs \
+    musl
+RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
+
+FROM linuxkit/alpine:3744607156e6b67e3e7d083b15be9e7722215e73 AS build
+RUN apk add --no-cache build-base curl git go musl-dev
+ENV GOPATH=/go PATH=$PATH:/go/bin
+ENV OPENGCS_COMMIT=4e4e6f28a03e974e6c32f00a91d51f9605821fdd
+RUN git clone https://github.com/Microsoft/opengcs.git /go/src/github.com/Microsoft/opengcs && \
+    cd /go/src/github.com/Microsoft/opengcs && \
+    git checkout $OPENGCS_COMMIT && \
+    cd service && \
+    make
+RUN mkdir /out && \
+    cp -r /go/src/github.com/Microsoft/opengcs/service/bin /out/bin && \
+    cp /go/src/github.com/Microsoft/opengcs/kernelconfig/4.11/scripts/init_script /out/init && \
+    chmod ugo+rx /out/init && \
+    mkdir /out/sbin && \
+    curl -fSL "https://raw.githubusercontent.com/mirror/busybox/38d966943f5288bb1f2e7219f50a92753c730b14/examples/udhcp/simple.script" -o /out/sbin/udhcpc_config.script && \
+    chmod ugo+rx /out/sbin/udhcpc_config.script && \
+    mkdir -p /out/root/integration && \
+    cp /go/src/github.com/Microsoft/opengcs/kernelconfig/4.11/prebuildSandbox.vhdx /out/root/integration/prebuildSandbox.vhdx
+
+# This d line below should be removed once
+# https://github.com/Microsoft/opengcs/issues/52 is addressed and then
+# runc should be added via the YAML file
+FROM linuxkit/runc:a0f2894e50bacbd1ff82be41edff8b8e06e0b161 AS runc
+
+FROM scratch
+ENTRYPOINT []
+CMD []
+WORKDIR /
+COPY --from=mirror /out/ /
+COPY --from=build /out/ /
+COPY --from=runc /usr/bin/runc /sbin/runc
+

pkg/init-lcow/Makefile

@@ -0,0 +1,4 @@
+IMAGE=init-lcow
+NETWORK=1
+
+include ../package.mk