First pass at setting up GCP deploy config as infrastructure

- Terraform config files to setup cluster, deployments and services
  - Adds only Searxng deployment and test service in this commit

- Makefile to:
  - Build and push images
  - Run terraform with correct project configuration

- Env file template to help setting .env file with project configs

deploy/gcp/Makefile

@@ -0,0 +1,81 @@
+# USAGE:
+# 0: Install `docker` and `terraform` (Process specific to your system)
+# 1: Copy the sample.env file to .env
+# 2: Fillout the GCP info in .env
+# 3: Edit GCP_REPO to the correct docker image repo path if you are using something other than Container registry
+# 4: Edit the PREFIX if you would like images and GKE entities to be prefixed with something else
+# 5: Run `make init` to initialize terraform
+# 6: Follow the normal Preplexica configuration steps outlined in the project readme
+# 7: Run `make build-deplpy` to build and push the project images to the repo, create a GKE cluster and deploy the app
+#
+# NOTES/ WARNINGS:
+# - The app endpoint is unsecured and exposed to the internet at large, you will need to implement your desired auth
+# - No auto scaling is enabled for this cluster and deployments, edit the terraform files accordingly for that
+include .env
+
+# Use `location-id-docker.pkg` for artifact registry Ex. west-1-docker.pkg
+GCP_REPO=gcr.io
+PREFIX=perplexica
+SEARCH_IMAGE_TAG=$(GCP_REPO)/$(GCP_PROJECT_ID)/$(PREFIX)-searxng:latest
+BACKEND_IMAGE_TAG=$(GCP_REPO)/$(GCP_PROJECT_ID)/$(PREFIX)-backend:latest
+APP_IMAGE_TAG=$(GCP_REPO)/$(GCP_PROJECT_ID)/$(PREFIX)-app:latest
+CLUSTER_NAME=$(PREFIX)-cluster
+
+
+.PHONY: build-deplpy
+build-deplpy: docker-build-all deploy
+
+
+.PHONY: docker-build-all
+docker-build-all: docker-build-push-searxng docker-build-push-backend docker-build-push-app
+
+
+.PHONY: show_config
+show_config:
+	@echo $(GCP_PROJECT_ID) \
+	&& echo $(CLUSTER_NAME) \
+	&& echo $(GCP_REGION) \
+	&& echo $(GCP_SERVICE_ACCOUNT_KEY_FILE) \
+	&& echo $(SEARCH_IMAGE_TAG) \
+	&& echo $(BACKEND_IMAGE_TAG) \
+	&& echo $(APP_IMAGE_TAG)
+
+
+.PHONY: docker-build-push-searxng
+docker-build-push-searxng:
+	cd ../../ && docker build -f ./searxng.dockerfile -t $(SEARCH_IMAGE_TAG) . --platform="linux/amd64"
+	docker push $(SEARCH_IMAGE_TAG)
+
+
+.PHONY: docker-build-push-backend
+docker-build-push-backend:
+	cd ../../ && docker build -f ./backed.dockerfile -t $(BACKEND_IMAGE_TAG) . --platform="linux/amd64"
+	docker push $(BACKEND_IMAGE_TAG)
+
+
+.PHONY: docker-build-push-app
+docker-build-push-app:
+	cd ../../ && docker build -f ./app.dockerfile -t $(APP_IMAGE_TAG) . --platform="linux/amd64"
+	docker push $(APP_IMAGE_TAG)
+
+
+.PHONY: init
+init:
+	terraform init
+
+
+.PHONY: deploy
+deploy:
+	export TF_VAR_project_id=$(GCP_PROJECT_ID) \
+	&& export TF_VAR_cluster_name=$(CLUSTER_NAME) \
+	&& export TF_VAR_region=$(GCP_REGION) \
+	&& export TF_VAR_key_file=$(GCP_SERVICE_ACCOUNT_KEY_FILE) \
+	&& export TF_VAR_search_image=$(SEARCH_IMAGE_TAG) \
+	&& export TF_VAR_backend_image=$(BACKEND_IMAGE_TAG) \
+	&& export TF_VAR_app_image=$(APP_IMAGE_TAG) \
+	&& terraform apply
+
+
+.PHONY: teardown
+teardown:
+	terraform destroy