docker: add Dockerfiles for all risk levels (#1914)

Signed-off-by: Kyle Fazzari <kyrofa@ubuntu.com>

docker/README.md

@@ -0,0 +1,27 @@
+# Creating docker containers for snapcraft
+
+## Setup
+
+    sudo snap install docker
+
+Ensure networking works, in some cases `dockerd` might need to have something
+like `--dns=8.8.8.8` added to the command.
+
+## Creating containers
+
+There are four separate Dockerfiles here, each one corresponding to their
+respective risk level:
+
+- **edge.Dockerfile**: Using the snap from edge
+- **beta.Dockerfile**: Using the snap from beta
+- **candidate.Dockerfile**: Using the snap from candidate
+- **stable.Dockerfile**: Using the snap from stable
+
+Build the docker image with the following (note that `--network host` is not
+strictly needed if a proper docker bridge is setup):
+
+    docker build --no-cache -f <risk>.Dockerfile --label snapcore/snapcraft --tag snapcore/snapcraft:<risk> --network host .
+
+You can push that image with:
+
+    docker push snapcore/snapcraft:<risk>

docker/snap-beta.Dockerfile → docker/beta.Dockerfile

@@ -8,18 +8,13 @@ RUN apt-get update && \
   mkdir -p /snap/core && unsquashfs -d /snap/core/current core.snap && rm core.snap && \
   curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/snapcraft?channel=beta' | jq '.download_url' -r) --output snapcraft.snap && \
   mkdir -p /snap/snapcraft && unsquashfs -d /snap/snapcraft/current snapcraft.snap && rm snapcraft.snap && \
-  mkdir -p /snap/bin && \
-  echo "#!/bin/sh" > /snap/bin/snapcraft && \
-  echo 'exec $SNAP/usr/bin/python3 $SNAP/bin/snapcraft "$@"' >> /snap/bin/snapcraft && \
-  chmod a+x /snap/bin/snapcraft && \
   apt remove --yes --purge curl jq squashfs-tools && \
   apt-get autoclean --yes && \
   apt-get clean --yes
 
+COPY bin/snapcraft-wrapper /snap/bin/snapcraft
+
 
 ENV SNAP=/snap/snapcraft/current
 ENV SNAP_NAME=snapcraft
-ENV SNAP_VERSION=beta
 ENV PATH=/snap/bin:$PATH
-# Required by click.
-ENV LC_ALL C.UTF-8

docker/bin/snapcraft-wrapper

@@ -0,0 +1,3 @@
+#!/bin/sh
+export SNAP_VERSION="$(awk '/^version:/{print $2}' '/snap/snapcraft/current/meta/snap.yaml')"
+exec $SNAP/usr/bin/python3 $SNAP/bin/snapcraft "$@"

docker/candidate.Dockerfile

@@ -0,0 +1,20 @@
+FROM ubuntu:xenial
+
+RUN apt-get update && \
+  apt-get dist-upgrade --yes && \
+  apt-get install --yes \
+  curl sudo jq squashfs-tools && \
+  curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/core' | jq '.download_url' -r) --output core.snap && \
+  mkdir -p /snap/core && unsquashfs -d /snap/core/current core.snap && rm core.snap && \
+  curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/snapcraft?channel=candidate' | jq '.download_url' -r) --output snapcraft.snap && \
+  mkdir -p /snap/snapcraft && unsquashfs -d /snap/snapcraft/current snapcraft.snap && rm snapcraft.snap && \
+  apt remove --yes --purge curl jq squashfs-tools && \
+  apt-get autoclean --yes && \
+  apt-get clean --yes
+
+COPY bin/snapcraft-wrapper /snap/bin/snapcraft
+
+
+ENV SNAP=/snap/snapcraft/current
+ENV SNAP_NAME=snapcraft
+ENV PATH=/snap/bin:$PATH

docker/snap-edge.Dockerfile → docker/edge.Dockerfile

@@ -8,18 +8,13 @@ RUN apt-get update && \
   mkdir -p /snap/core && unsquashfs -d /snap/core/current core.snap && rm core.snap && \
   curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/snapcraft?channel=edge' | jq '.download_url' -r) --output snapcraft.snap && \
   mkdir -p /snap/snapcraft && unsquashfs -d /snap/snapcraft/current snapcraft.snap && rm snapcraft.snap && \
-  mkdir -p /snap/bin && \
-  echo "#!/bin/sh" > /snap/bin/snapcraft && \
-  echo 'exec $SNAP/usr/bin/python3 $SNAP/bin/snapcraft "$@"' >> /snap/bin/snapcraft && \
-  chmod a+x /snap/bin/snapcraft && \
   apt remove --yes --purge curl jq squashfs-tools && \
   apt-get autoclean --yes && \
   apt-get clean --yes
 
+COPY bin/snapcraft-wrapper /snap/bin/snapcraft
+
 
 ENV SNAP=/snap/snapcraft/current
 ENV SNAP_NAME=snapcraft
-ENV SNAP_VERSION=edge
 ENV PATH=/snap/bin:$PATH
-# Required by click.
-ENV LC_ALL C.UTF-8

docker/stable.Dockerfile

@@ -0,0 +1,20 @@
+FROM ubuntu:xenial
+
+RUN apt-get update && \
+  apt-get dist-upgrade --yes && \
+  apt-get install --yes \
+  curl sudo jq squashfs-tools && \
+  curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/core' | jq '.download_url' -r) --output core.snap && \
+  mkdir -p /snap/core && unsquashfs -d /snap/core/current core.snap && rm core.snap && \
+  curl -L $(curl -H 'X-Ubuntu-Series: 16' 'https://api.snapcraft.io/api/v1/snaps/details/snapcraft?channel=stable' | jq '.download_url' -r) --output snapcraft.snap && \
+  mkdir -p /snap/snapcraft && unsquashfs -d /snap/snapcraft/current snapcraft.snap && rm snapcraft.snap && \
+  apt remove --yes --purge curl jq squashfs-tools && \
+  apt-get autoclean --yes && \
+  apt-get clean --yes
+
+COPY bin/snapcraft-wrapper /snap/bin/snapcraft
+
+
+ENV SNAP=/snap/snapcraft/current
+ENV SNAP_NAME=snapcraft
+ENV PATH=/snap/bin:$PATH