DockerCloud: Use rocker build

.travis.yml

@@ -1,5 +1,5 @@
 sudo: required
-language: generic
+language: go
 
 services:
   - docker
@@ -9,7 +9,10 @@ services:
 env:
   global:
     - SOURCE_BRANCH=$TRAVIS_BRANCH
-    - IMAGE_NAME=coala-docker
+    - IMAGE_NAME=coala-docker:this
+
+before_install:
+  - go get github.com/grammarly/rocker
 
 install:
   - hooks/build

Dockerfile

@@ -202,6 +202,8 @@ RUN \
   time zypper clean -a && \
   find /tmp -mindepth 1 -prune -exec rm -rf '{}' '+'
 
+# rocker TAG {{ .image }}_suse
+
 # Coala setup and python deps
 RUN cd / && \
   git clone --depth 1 --branch=$branch https://github.com/coala/coala.git && \
@@ -346,3 +348,5 @@ RUN mkdir -p /root/.local/share/coala-bears/ScalaLintBear && \
 # Entrypoint script
 ADD docker-coala.sh /usr/local/bin/
 CMD ["/usr/local/bin/docker-coala.sh"]
+
+# rocker TAG {{ .image }}

hooks/build

@@ -1,9 +1,40 @@
 #!/usr/bin/env bash
 
+set -e -x
+
+if [[ "${IMAGE_NAME/:/}" == "${IMAGE_NAME}" ]]; then
+  # DockerCloud uses :this for pull requests
+  IMAGE_NAME="${IMAGE_NAME}:this"
+fi
+
+ROCKER="$(which rocker | true)"
+
+# On DockerCloud, include the rocker command added in pre_build
+if [[ -z "$ROCKER" && -f "$HOME/goroot/bin/rocker" ]]; then
+  TOOL="$HOME/goroot/bin/rocker"
+fi
+
+if [[ -z "$TOOL" ]]; then
+  if [[ -n "$ROCKER" ]]; then
+    TOOL="$ROCKER"
+  else
+    TOOL=docker
+  fi
+fi
+
+if [[ "${TOOL%docker}" != "$TOOL" ]]; then
+  TOOL_ARGS="-t $IMAGE_NAME"
+elif [[ "${TOOL%rocker}" != "$TOOL" ]]; then
+  TOOL_ARGS="--var image=$IMAGE_NAME"
+  sed -i 's/^# rocker \([A-Z]*\) /\1 /' Dockerfile
+fi
+
 COALA_BRANCH=$(python guess_branch.py "$SOURCE_BRANCH")
 
 echo "Building coala branch $COALA_BRANCH for docker branch $SOURCE_BRANCH"
+echo "as image ${IMAGE_NAME}, using ${TOOL} on $(uname -a)."
 
-docker build -f Dockerfile \
+$TOOL build \
+  -f Dockerfile \
   --build-arg=branch="$COALA_BRANCH" \
-  -t "$IMAGE_NAME" .
+  $TOOL_ARGS .

hooks/pre_build

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+set -e -x
+
+# This is run on DockerCloud, and not run on Travis
+
+export DEBIAN_FRONTEND=noninteractive
+export GOPATH=$HOME/goroot
+
+time apt-get --yes install golang-1.6-go
+time /usr/lib/go-1.6/bin/go get github.com/grammarly/rocker