Try another devcontainers config

Author: pinin4fjords

.devcontainer/devcontainer.json

@@ -8,12 +8,13 @@
     "features": {
         "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
     },
-    "workspaceFolder": "${localWorkspaceFolder}",
-    "workspaceMount": "source=${localWorkspaceFolder},target=${localWorkspaceFolder},type=bind",
+    "workspaceFolder": "/workspaces/training",
+    "workspaceMount": "source=${localWorkspaceFolder},target=/workspaces/training,type=bind", //This line will work in local devcontainers, but not in codespaces.
     "remoteEnv": {
-        "NXF_HOME": "/workspaces/.nextflow",
-        "HOST_PROJECT_PATH": "${localWorkspaceFolder}"
+      "NXF_HOME": "/workspaces/.nextflow",
+      "HOST_PROJECT_PATH": "/workspaces/training" //Codespaces and local devcontainers will both work with this.
     },
+    "postCreateCommand": "if [ -z \"$CODESPACES\" ]; then echo \"Local Development\"; else echo \"Codespaces Development\"; fi",
     // Configure tool-specific properties.
     "customizations": {
         // Configure properties specific to VS Code.