ci: ./deploy/ci.sh wrapper for build, deploy

right now capable of pushing a local build
staging/prod builds not tested
deploy not implemented

ref: #24

deploy/ci.sh

@@ -0,0 +1,112 @@
+#!/usr/bin/env bash
+
+# Bash strict mode https://olivergondza.github.io/2019/10/01/bash-strict-mode.html
+set -euox pipefail
+IFS=$'\n\t'
+
+ACTION=${1}
+
+if [[ -z "${ENVIRONMENT}" ]]; then
+    (>&2 echo "You must set the ENVIRONMENT env var")
+    exit 1
+fi
+
+# Functions
+docker_build_and_push() {
+    header "Building and pushing Docker image"
+    # Use Gitlab CI_COMMIT_SHORT_SHA if available, otherwise use current commit
+    COMMIT_SHA=${CI_COMMIT_SHORT_SHA:-$(git rev-parse --short=8 HEAD)}
+    DOCKER_IMAGE="${GAR_HOSTNAME}/${GCP_PROJECT}/${GAR_REPO}/${APP_NAME}"
+    DOCKER_IMAGE_TAG="${DOCKER_IMAGE}:${GAR_IMAGE_TAG}-${COMMIT_SHA}"
+    # Pull the latest Docker image
+    docker pull --quiet "${DOCKER_IMAGE}:latest" || true
+    # Build the Docker image
+    docker build --build-arg BUILDKIT_INLINE_CACHE=1 --cache-from "${DOCKER_IMAGE}:latest" -t "${DOCKER_IMAGE_TAG}" .
+    docker tag  "${DOCKER_IMAGE_TAG}" "${DOCKER_IMAGE}:latest"
+    docker push --all-tags ${DOCKER_IMAGE}
+}
+
+gcloud_auth() {
+    header "Authenticating with GCP"
+
+    # Do not print $GCLOUD_KEY
+    set +x
+
+    if [[ -z "${GCLOUD_KEY}" ]]; then
+        echo "You must set the GCLOUD_KEY env var"
+        exit 1
+    fi
+
+    # Install our service account credentials.
+    echo "$GCLOUD_KEY" > /tmp/gcloud.json
+    gcloud auth activate-service-account --key-file /tmp/gcloud.json
+
+    # Authenticate the Docker daemon
+    gcloud --quiet auth configure-docker $GAR_HOSTNAME
+}
+
+gcloud_kubernetes_auth() {
+    gcloud --project=$GCP_PROJECT container clusters get-credentials -z $GCP_ZONE "$GCP_GKE_CLUSTER_NAME"
+}
+
+header() {
+    set +x
+    echo "========================================================================"
+    echo " $1"
+    echo "========================================================================"
+}
+
+usage() {
+    set +x
+    echo "Usage: $0 [build|deploy]"
+    echo "Requires at least an ENVIRONMENT environment variable to be set to one of [dev/local, staging, prod]."
+}
+
+# Constants
+APP_NAME="invenio"
+GAR_HOSTNAME="us-west2-docker.pkg.dev"
+GAR_REPO="docker-web"
+GCP_ZONE="us-west1-b"
+
+# Environment-dependent variables
+case $ENVIRONMENT in
+    "dev" | "local")
+        GCP_PROJECT="cca-web-staging"
+        GAR_IMAGE_TAG="dev"
+        # No need to authenticate with GCP
+        ;;
+    "staging")
+        GCP_PROJECT="cca-web-staging"
+        GAR_IMAGE_TAG="staging"
+        gcloud_auth
+        ;;
+    "prod")
+        GCP_PROJECT="cca-web-0"
+        GAR_IMAGE_TAG="prod"
+        gcloud_auth
+        ;;
+    *)
+        (>&2 echo "Invalid environment: ${ENVIRONMENT}")
+        exit 1
+        ;;
+esac
+
+# Main
+case $ACTION in
+    "help" | "--help" | "-h" | "")
+        usage
+        ;;
+    "build")
+        docker_build_and_push
+        ;;
+    "deploy")
+        # helm nonsense
+        # cat deploy/values.yaml | envsubst | helm upgrade --install --namespace ${APP_NAME}-${ENVIRONMENT} --create-namespace --values -
+        echo "Deploying to kubernetes not implemented yet"
+        ;;
+    *)
+        echo "Invalid action: ${ACTION}" >&2
+        usage
+        exit 1
+        ;;
+esac