Revert "var for images"

This reverts commit 0c3ecb2730.

.gitea/workflows/checks.yml

@@ -11,10 +11,10 @@ on:
 
 jobs:
   # TODO(cascode) cache checkout for build and test stages?
-  # TODO use communitymedia docker registry
   lint:
-    container: &BUILD_CONTAINER
-      image: "cascode/aural-isle-ci:2"
+    container:
+      # TODO use communitymedia docker registry
+      image: "cascode/aural-isle-ci:0"
     steps:
       - uses: actions/checkout@v3
         with:
@@ -22,7 +22,9 @@ jobs:
       - 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:
@@ -31,7 +33,9 @@ jobs:
         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: