Continuous integration (#2)

* Add CI workflow similar to other zebra

* Bump cache TTL to 24hours

* Expand image name to include full repo owner/repo-name/branch-name

* Force to lowercase because google container registry demands it

This may not be universally shell compatible

* Use bash as gcloud action container entrypoint

.github/workflows/main.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on: [push]
+
+jobs:
+
+  build:
+    name: Google Cloud Build
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - run:
+    - name: Authenticate w/ Google Cloud
+      uses: actions/gcloud/auth@master
+      env:
+        GCLOUD_AUTH: ${{ secrets.GCLOUD_AUTH }}
+    - name: Build, Test, Push to GCR
+      uses: actions/gcloud/cli@master
+      with:
+        entrypoint: bash
+        args: |
+          -l -c "BRANCH_NAME=$GITHUB_REPOSITORY/$(expr $GITHUB_REF : '.*/\(.*\)') && \
+          BRANCH_NAME=${BRANCH_NAME,,} && \
+          gcloud builds submit . --config cloudbuild.yaml --project zealous-zebra --substitutions BRANCH_NAME=$BRANCH_NAME"

Dockerfile

@@ -0,0 +1,22 @@
+FROM rust:stretch as base
+
+RUN apt-get update && \
+	apt-get install -y --no-install-recommends \
+	make cmake g++ gcc
+
+RUN mkdir /zebra
+WORKDIR /zebra
+
+ENV RUST_BACKTRACE 1
+ENV CARGO_HOME /zebra/.cargo/
+
+# Copy local code to the container image.
+# Assumes that we are in the git repo.
+
+COPY . .
+
+RUN cargo fetch --verbose
+
+COPY . .
+
+RUN rustc -V; cargo -V; rustup -V; cargo test --all && cargo build --release

cloudbuild.yaml

@@ -0,0 +1,11 @@
+steps:
+- name: 'gcr.io/kaniko-project/executor:latest'
+  args:
+  - --destination=gcr.io/$PROJECT_ID/$BRANCH_NAME
+  - --cache=true
+  - --cache-ttl=24h
+
+options:
+    machineType: 'N1_HIGHCPU_32'
+
+timeout: 3600s # One hour for all steps.