Create Dockerfile

Signed-off-by: Michal <michal@tar.black>

.devcontainer/Dockerfile

@@ -0,0 +1,7 @@
+FROM ghcr.io/crystal-linux/crystal:latest
+
+RUN  pacman -S --needed --noconfirm cargo openssl git binutils fakeroot pacman-contrib
+RUN  useradd -m -G wheel vscode
+RUN  bash -c "echo \"vscode ALL=(ALL) NOPASSWD: ALL\" >> /etc/sudoers"
+
+ENV  USER=vscode