[ci skip] improve codespace support

.devcontainer/devcontainer.json

@@ -13,8 +13,8 @@
   },
   "dockerComposeFile": "./../compose.yaml",
   "service": "shell",
-  "workspaceFolder": "/pskel",
+  "workspaceFolder": ".",
   "mounts": [
-    "source=${localWorkspaceFolder},target=/pskel,type=bind,consistency=cached"
+    "source=${localWorkspaceFolder},target=/workspaces/pskel,type=bind,consistency=cached"
   ]
 }

Dockerfile

@@ -31,5 +31,3 @@ RUN docker-php-source extract \
 
 COPY ./patches /patches
 COPY ./ext /ext
-
-WORKDIR "/pskel"

pskel.sh

@@ -21,9 +21,12 @@ EOF
 
   PSKEL_EXT_DIR="/ext"
 
-  if test -d "/pskel/ext"; then
-    echo "[Pskel] Development containers workspace detected, use \"/pskel/ext\"." >&2
-    PSKEL_EXT_DIR="/pskel/ext"
+  if test -d "/workspaces/pskel/ext"; then
+    echo "[Pskel] Development Containers workspace detected, use \"/workspaces/pskel/ext\"." >&2
+    PSKEL_EXT_DIR="/workspaces/pskel/ext"
+  elif test -d "${CODESPACE_VSCODE_FOLDER}"; then
+    echo "[Pskel] GitHub Codespace workspace detected, use \"${CODESPACE_VSCODE_FOLDER}/ext\"." >&2
+    PSKEL_EXT_DIR="${CODESPACE_VSCODE_FOLDER}/ext"
   fi
 
   /usr/local/bin/php "/usr/src/php/ext/ext_skel.php" --ext "${1}" --dir "/tmp" ${@}
@@ -90,9 +93,12 @@ EOF
 
   PSKEL_EXT_DIR="/ext"
 
-  if test -d "/pskel/ext"; then
-    echo "[Pskel] Development containers workspace detected, use \"/pskel/ext\"." >&2
-    PSKEL_EXT_DIR="/pskel/ext"
+  if test -d "/workspaces/pskel/ext"; then
+    echo "[Pskel] Development Containers workspace detected, use \"/workspaces/pskel/ext\"." >&2
+    PSKEL_EXT_DIR="/workspaces/pskel/ext"
+  elif test -d "${CODESPACE_VSCODE_FOLDER}"; then
+    echo "[Pskel] GitHub Codespace workspace detected, use \"${CODESPACE_VSCODE_FOLDER}/ext\"." >&2
+    PSKEL_EXT_DIR="${CODESPACE_VSCODE_FOLDER}/ext"
   else
     if test -f "/ext/.gitkeep" && test $(cat "/ext/.gitkeep") = "pskel_uninitialized"; then
        echo "[Pskel] Uninitialized project detected, initialize default skeleton." >&2