devcontainer: mount images by symlink

.devcontainer/devcontainer.json

@@ -0,0 +1 @@
+./oss/devcontainer.json

.devcontainer/oss/devcontainer.json

@@ -15,7 +15,7 @@
     },
     "mounts": [
         {
-            "source": "${localWorkspaceFolder}/testdata/test-images",
+            "source": "${localWorkspaceFolder}/.devcontainer/images",
             "target": "/images",
             "type": "bind"
         },
@@ -44,5 +44,9 @@
         }
     },
     "postCreateCommand": "lefthook install",
-    "initializeCommand": "mkdir -p ${localWorkspaceFolder}/.tmp/_dev-root/.cache ${localWorkspaceFolder}/.tmp/_dev-root/go/pkg/mod && touch ${localWorkspaceFolder}/.tmp/_dev-root/.bash_history",
+    "initializeCommand": {
+        "createCacheDirs": "mkdir -p ${localWorkspaceFolder}/.tmp/_dev-root/.cache ${localWorkspaceFolder}/.tmp/_dev-root/go/pkg/mod",
+        "createBashHistory": "touch ${localWorkspaceFolder}/.tmp/_dev-root/.bash_history",
+        "linkImagesDir": "if [ ! -e ${localWorkspaceFolder}/.devcontainer/images ]; then ln -s ${localWorkspaceFolder}/testdata/test-images ${localWorkspaceFolder}/.devcontainer/images; fi"
+    }
 }

.gitignore

@@ -10,3 +10,4 @@ docs/sitemap.txt
 .env
 .imgproxyrc
 k6/*.json
+.devcontainer/images

Makefile

@@ -159,7 +159,7 @@ _lychee:
 
 .PHONY: devcontainer
 devcontainer:
-	devcontainer exec --workspace-folder $(MAKEFILE_DIR) --config .devcontainer/oss/devcontainer.json bash
+	devcontainer exec --workspace-folder $(MAKEFILE_DIR) bash
 
 
 # Make any unknown target do nothing to avoid "up to date" messages