Revert "dropme: remove other drone tasks for faster debugging"

This reverts commit cdc91aec57.

.drone.yml

@@ -1,5 +1,108 @@
 kind: pipeline
 type: docker
+name: check
+
+services:
+  - name: postgres
+    image: docker.io/library/postgres:17.6
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+
+trigger:
+  event:
+    - push
+
+steps:
+  - name: compute cache key
+    image: docker.io/library/elixir:1.18.3-otp-27
+    commands:
+      - mix_lock_hash=$(sha256sum mix.lock | cut -d ' ' -f 1)
+      - echo "$DRONE_REPO_OWNER/$DRONE_REPO_NAME/$mix_lock_hash" >> .cache_key
+      # Print cache key for debugging
+      - cat .cache_key
+
+  - name: restore-cache
+    image: drillster/drone-volume-cache
+    settings:
+      restore: true
+      mount:
+        - ./deps
+        - ./_build
+      ttl: 30
+    volumes:
+      - name: cache
+        path: /cache
+
+  - name: lint
+    image: docker.io/library/elixir:1.18.3-otp-27
+    commands:
+      # Install hex package manager
+      - mix local.hex --force
+      # Fetch dependencies
+      - mix deps.get
+      # Check for compilation errors & warnings
+      - mix compile --warnings-as-errors
+      # Check formatting
+      - mix format --check-formatted
+      # Security checks
+      - mix sobelow --config
+      # Check dependencies for known vulnerabilities
+      - mix deps.audit
+      # Check for dependencies that are not maintained anymore
+      - mix hex.audit
+      # Provide hints for improving code quality
+      - mix credo
+
+  - name: wait_for_postgres
+    image: docker.io/library/postgres:17.6
+    commands:
+      # Wait for postgres to become available
+      - |
+        for i in {1..20}; do
+          if pg_isready -h postgres -U postgres; then
+            exit 0
+          else
+            true
+          fi
+          sleep 2
+        done
+        echo "Postgres did not become available, aborting."
+        exit 1
+
+  - name: test
+    image: docker.io/library/elixir:1.18.3-otp-27
+    environment:
+      MIX_ENV: test
+      TEST_POSTGRES_HOST: postgres
+      TEST_POSTGRES_PORT: 5432
+    commands:
+      # Install hex package manager
+      - mix local.hex --force
+      # Fetch dependencies
+      - mix deps.get
+      # Run tests
+      - mix test
+
+  - name: rebuild-cache
+    image: drillster/drone-volume-cache
+    settings:
+      rebuild: true
+      mount:
+        - ./deps
+        - ./_build
+    volumes:
+      - name: cache
+        path: /cache
+
+volumes:
+  - name: cache
+    host:
+      path: /tmp/drone_cache
+
+---
+kind: pipeline
+type: docker
 name: build-and-publish
 
 trigger:
@@ -42,6 +145,9 @@ steps:
       event:
         - push
 
+depends_on:
+  - check
+
 ---
 kind: pipeline
 type: docker