Merge pull request #2 from carlpett/docker-hooks

Use docker build hooks to inject correct plugin version

Author: carlpett

.circleci/config.yml

@@ -18,8 +18,16 @@ jobs:
       - run: make build
       - run:
           name: Download github-release tool
-          command: curl -sL 'https://github.com/aktau/github-release/releases/download/v0.6.2/linux-amd64-github-release.tar.bz2' | tar xjf - --strip-components 3 -C /go/bin
+          command: |
+            curl -sL 'https://github.com/aktau/github-release/releases/download/v0.6.2/linux-amd64-github-release.tar.bz2' | \
+              tar xjf - --strip-components 3 -C /go/bin
       - run: github-release upload --user carlpett --repo terraform-sops --tag $CIRCLE_TAG --name terraform-provider-sops_$CIRCLE_TAG-linux-amd64 --file terraform-provider-sops
+      - run:
+          name: Trigger Docker Hub automated build
+          command: |
+            curl -X POST -H "Content-Type: application/json" \
+              --data "{\"source_type\": \"Tag\", \"source_name\": \"$CIRCLE_TAG\"}" \
+              https://registry.hub.docker.com/u/carlpett/terraform-sops/trigger/$DOCKER_HUB_TRIGGER_TOKEN/
       - store_artifacts:
           path: terraform-provider-sops
 

Dockerfile docker/DockerfileDockerfile renamed to docker/Dockerfile

@@ -1,4 +1,5 @@
 FROM hashicorp/terraform:light
-ENV SOPS_PLUGIN_VERSION=v0.0.1
+ARG SOPS_PLUGIN_VERSION
+ENV SOPS_PLUGIN_VERSION=${SOPS_PLUGIN_VERSION}
 RUN curl -sLo /bin/terraform-provider-sops_${SOPS_PLUGIN_VERSION} https://github.com/carlpett/terraform-sops/releases/download/${SOPS_PLUGIN_VERSION}/terraform-provider-sops_${SOPS_PLUGIN_VERSION}-linux-amd64 && \
 	chmod +x /bin/terraform-provider-sops_${SOPS_PLUGIN_VERSION}

docker/hooks/build

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -eufo pipefail
+if ! echo ${DOCKER_TAG} | grep -qE '^v[0-9\.]+'; then
+	# If the tag is not a version, use the version of the latest tag
+	git fetch --tags --unshallow >/dev/null
+	export DOCKER_TAG=$(git describe --tags --abbrev=0 --match='v*')
+	echo "Using plugin version ${DOCKER_TAG}"
+fi
+docker build --build-arg "SOPS_PLUGIN_VERSION=${DOCKER_TAG}" -t "${IMAGE_NAME}" .