fix makefile and dockerfile

Here are multiple changes to commands run by Makefile based on my
attempts to run it on an Oracle Linux machine with the latest Docker.

.github/workflows/e2e-tests.yml

@@ -24,7 +24,7 @@ jobs:
 
       - name: Build & run containers
         id: tests
-        run: COMPOSE_DOCKER_CLI_BUILD=1 DOCKER_BUILDKIT=1 docker-compose -f compose-e2e-test.yml up --build --quiet-pull --exit-code-from tests
+        run: COMPOSE_DOCKER_CLI_BUILD=1 DOCKER_BUILDKIT=1 docker compose -f compose-e2e-test.yml up --build --quiet-pull --exit-code-from tests
 
       - uses: actions/upload-artifact@v2
         if: always()

Dockerfile.artifacts

@@ -4,7 +4,7 @@ ENV CI=true
 
 WORKDIR /srv/frontend
 
-COPY ./frontend/package.json ./frontend/pnpm-lock.yaml ./frontend/pnpm-workspace.yaml /srv/frontend
+COPY ./frontend/package.json ./frontend/pnpm-lock.yaml ./frontend/pnpm-workspace.yaml /srv/frontend/
 COPY ./frontend/apps/remark42/package.json /srv/frontend/apps/remark42/package.json
 
 RUN apk add --no-cache --update git && npm i -g pnpm

Makefile

@@ -11,7 +11,7 @@ bin:
 	docker rm -f remark42.bin
 
 docker:
-	docker build -t umputun/remark42 --build-arg GITHUB_REF=$(GITHUB_REF) --build-arg GITHUB_SHA=$(GITHUB_SHA) \
+	DOCKER_BUILDKIT=1 docker build -t umputun/remark42 --build-arg GITHUB_REF=$(GITHUB_REF) --build-arg GITHUB_SHA=$(GITHUB_SHA) \
 		--build-arg CI=true --build-arg SKIP_FRONTEND_TEST=true --build-arg SKIP_BACKEND_TEST=true .
 
 dockerx:

site/src/docs/manuals/subdomain/index.md

@@ -19,7 +19,7 @@ All README examples show configurations with remark42 on its own subdomain, i.e.
 
 Both Nginx and Caddy configuration below rely on remark42 available on hostname `remark42`, which is achieved by having `container_name: remark42` in docker-compose.
 
-Example `docker-compose.yaml`:
+Example `docker-compose.yml`:
 
 ```yaml
 version: "2"