diff --git a/.devcontainer/devcontainer.json b/.devcontainer.json
similarity index 95%
rename from .devcontainer/devcontainer.json
rename to .devcontainer.json
index bf30152..cad6b6e 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer.json
@@ -2,10 +2,7 @@
 // https://hub.docker.com/_/python
 {
     "name": "InChI",
-    "build": {
-        "dockerfile": "Dockerfile",
-        "context": ".."
-    },
+    "image": "gcc:14-bookworm",
     "features": {
         "ghcr.io/devcontainers/features/common-utils:2": {
             "installZsh": true,
@@ -51,4 +48,4 @@
         }
     },
     "postCreateCommand": "cd INCHI-1-TEST && ./install.sh"
-}
+}
\ No newline at end of file
diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
deleted file mode 100644
index aa50b4a..0000000
--- a/.devcontainer/Dockerfile
+++ /dev/null
@@ -1,4 +0,0 @@
-FROM gcc:14-bookworm
-
-RUN apt-get update && apt-get install -y \
-    cmake
diff --git a/INCHI-1-TEST/install.sh b/INCHI-1-TEST/install.sh
index 1cb32fc..8eeb711 100755
--- a/INCHI-1-TEST/install.sh
+++ b/INCHI-1-TEST/install.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-apt update && apt install -y python3-pip
+apt update && apt install -y python3-pip cmake
 python3 -m pip install --upgrade --break-system-packages pip
 python3 -m pip install --break-system-packages -e .[invariance-tests,development]
 # Make `python3` available as `python`.