chore: some corrections in devcontainers

Author: d-biehl

.devcontainer/Dockerfile

@@ -49,6 +49,4 @@ RUN pipx install hatch
 RUN pipx install python-semantic-release
 RUN pipx install pre-commit
 
-RUN hatch config set dirs.env.virtual ".hatch"
-
-ENV SHELL=/usr/bin/zsh
+ENV SHELL=/usr/bin/zsh

.devcontainer/devcontainer.json

@@ -15,7 +15,7 @@
   // "forwardPorts": [],
 
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "bash -i -c 'npm install --also-dev && hatch env create devel'",
+  "postCreateCommand": "bash -i -c 'npm install --also-dev && hatch config set dirs.env.virtual .hatch && hatch env create devel'",
 
   // Configure tool-specific properties.
   // "customizations": {},