more concise

This reverts commit a0e6005acd.

.gitea/workflows/checks.yml

@@ -12,29 +12,33 @@ on:
 jobs:
   # TODO(cascode) cache checkout for build and test stages?
   lint:
-    container: &BUILD_CONTAINER
+    container:
       # TODO use communitymedia docker registry
-      image: &BUILDER_IMAGE "cascode/aural-isle-ci:2"
+      image: "cascode/aural-isle-ci:0"
     steps:
       - uses: actions/checkout@v3
         with:
-          github-server-url: &GIT_URL "https://code.communitymedia.network"
+          github-server-url: "https://code.communitymedia.network"
       - name: rustfmt
         run: cargo fmt --check
   build:
-    container: *BUILD_CONTAINER
+    container:
+      # TODO use communitymedia docker registry
+      image: "cascode/aural-isle-ci:2"
     steps:
       - uses: actions/checkout@v3
         with:
-          github-server-url: *GIT_URL
+          github-server-url: "https://code.communitymedia.network"
       - name: build
         run: cargo build
   # TODO(cascode) cache builds for test stage
   test:
-    container: *BUILD_CONTAINER
+    container:
+      # TODO use communitymedia docker registry
+      image: "cascode/aural-isle-ci:2"
     steps:
       - uses: actions/checkout@v3
         with:
-          github-server-url: *GIT_URL
+          github-server-url: "https://code.communitymedia.network"
       - name: run unit tests
         run: cargo test