Adds a dev container and Codespaces docs

Signed-off-by: Samruddhi Khandale <samruddhikhandale@github.com>

.devcontainer/Dockerfile

@@ -0,0 +1,28 @@
+# For details, see https://github.com/devcontainers/images/tree/main/src/base-ubuntu
+FROM mcr.microsoft.com/devcontainers/base:1-ubuntu-22.04
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends \
+        gperf \
+        dmsetup \
+        bc \
+        software-properties-common \
+        libseccomp-dev \
+        xfsprogs \
+        lsof \
+        iptables \
+        autoconf \
+        automake \
+        g++ \
+        libtool \
+        acl \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN add-apt-repository -y ppa:criu/ppa \
+    && apt-get update \
+    && apt-get install -y criu \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN setfacl -PRdm u::rwx,g::rx,o::rx /tmp
+
+COPY .devcontainer/welcome-message.txt /usr/local/etc/vscode-dev-containers/first-run-notice.txt