ci: add 'check compose' step to pipelines

.drone.yml

@@ -131,13 +131,28 @@ depends_on:
 steps:
   - name: hadolint
     image: docker.io/hadolint/hadolint:v2.10.0-alpine
+    depends_on: [clone]
     commands:
       - hadolint --version
       - hadolint Dockerfile
 
+  - name: check compose
+    pull: always
+    image: docker.io/tmaier/docker-compose:latest
+    depends_on: [clone]
+    volumes:
+      - name: s
+        path: /var/run/docker.sock
+    environment:
+      COMPOSE_DOCKER_CLI_BUILD: 1
+      DOCKER_BUILDKIT: 1
+    commands:
+      - docker-compose -f docker-compose.yml config -q
+
   - name: build
     pull: always
     image: docker.io/tmaier/docker-compose:latest
+    depends_on: [hadolint, check compose]
     volumes:
       - name: s
         path: /var/run/docker.sock
@@ -266,6 +281,19 @@ steps:
       - hadolint --version
       - hadolint Dockerfile
 
+  - name: check compose
+    pull: always
+    image: docker.io/tmaier/docker-compose:latest
+    depends_on: [clone]
+    volumes:
+      - name: s
+        path: /var/run/docker.sock
+    environment:
+      COMPOSE_DOCKER_CLI_BUILD: 1
+      DOCKER_BUILDKIT: 1
+    commands:
+      - docker-compose -f docker-compose.yml config -q
+
   - name: go fmt
     image: docker.io/library/golang:1.18.5-alpine3.16
     volumes:
@@ -312,6 +340,7 @@ steps:
     depends_on:
       - rm-intermediate
       - hadolint
+      - check compose
       - go fmt
       - go vet
       - go build
@@ -434,6 +463,6 @@ steps:
 
 ---
 kind: signature
-hmac: db9d7fad7e5ae3387693f534489a3d527e291f656470a31eeaea3c89956d1a9c
+hmac: 3ad709a54550a0182e0fe6df356c5de7204b373515546e5a95de971731f250fa
 
 ...