Update readmes regarding wsl2 devcontainer setup

docs/README.devcontainer.md

@@ -14,6 +14,9 @@ sudo apt install -y podman
 
 # Ensure Podman version is ≥ 4.9.3:
 podman --version
+
+# Add current user to uucp group for Podman socket access
+#sudo usermod -a -G uucp $(whoami)
 ```
 
 ## ⚙️ 2. Enable systemd and Podman socket
@@ -34,6 +37,10 @@ wsl --shutdown
 Enable Podman socket:
 
 ```bash
+# Enable linger to allow user services to run without active login
+# Without this, the command below may return: Failed to connect to bus: No such file or directory
+loginctl enable-linger $USER
+
 systemctl --user enable --now podman.socket
 ```
 
@@ -41,12 +48,7 @@ If `podman.socket` is masked or fails to start, create a custom service:
 
 ```bash
 mkdir -p ~/.config/systemd/user
-vim ~/.config/systemd/user/podman.service
-```
-
-Paste:
-
-```ini
+cat > ~/.config/systemd/user/podman.service <<EOF
 [Unit]
 Description=Podman API Service
 Requires=podman.socket
@@ -59,6 +61,7 @@ KillMode=process
 
 [Install]
 WantedBy=default.target
+EOF
 ```
 
 Reload and enable:
@@ -71,7 +74,7 @@ systemctl --user enable --now podman.socket
 Verify:
 
 ```bash
-curl --unix-socket /run/user/1000/podman/podman.sock http://localhost/_ping
+#curl --unix-socket /run/user/1000/podman/podman.sock http://localhost/_ping
 ```
 
 ## 🧠 3. Configure Podman registry (to avoid interactive prompts)