diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 52cf686b8..6b4a900a0 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -10,6 +10,14 @@
   "forwardPorts": [
     4200
   ],
+  "containerEnv": {
+    "HTTP_PROXY": "${localEnv:HTTP_PROXY:}",
+    "HTTPS_PROXY": "${localEnv:HTTPS_PROXY:}",
+    "NO_PROXY": "${localEnv:NO_PROXY:}",
+    "http_proxy": "${localEnv:http_proxy:}",
+    "https_proxy": "${localEnv:https_proxy:}",
+    "no_proxy": "${localEnv:no_proxy:}"
+  },
   "portsAttributes": {
     "4200": {
       "label": "Angular Dev Server",
@@ -17,7 +25,7 @@
     }
   },
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "npm install"
+  "postCreateCommand": "sed -i 's/\\r$//' .devcontainer/post-create.sh && /bin/bash .devcontainer/post-create.sh"
   // Configure tool-specific properties.
   // "customizations": {},
   // Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
diff --git a/.devcontainer/post-create.sh b/.devcontainer/post-create.sh
new file mode 100755
index 000000000..c5bea86c6
--- /dev/null
+++ b/.devcontainer/post-create.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+set -e
+
+# Unset empty proxy variables
+for var in HTTP_PROXY HTTPS_PROXY NO_PROXY http_proxy https_proxy no_proxy; do
+  eval v="\${$var}"
+  if [ -z "$v" ]; then unset $var; fi
+done
+
+# Strip all trailing '/' or '\\' from proxy URLs for apt config
+strip_trailing_slash() {
+  local url="$1"
+  # Remove all trailing / or \
+  url="${url%%*(/|\\)}"
+  # Fallback for Bash < 4.0 (no extglob): use sed
+  echo "$url" | sed 's%[\\/]*$%%'
+}
+
+if [ -n "$HTTP_PROXY" ] || [ -n "$http_proxy" ] || [ -n "$HTTPS_PROXY" ] || [ -n "$https_proxy" ]; then
+  echo "Configuring apt to use proxy..."
+  sudo mkdir -p /etc/apt/apt.conf.d
+  # Remove all trailing / or \\ from proxy URLs
+  apt_http_proxy="$(strip_trailing_slash "${HTTP_PROXY:-${http_proxy:-}}")"
+  apt_https_proxy="$(strip_trailing_slash "${HTTPS_PROXY:-${https_proxy:-}}")"
+  sudo tee /etc/apt/apt.conf.d/99proxy > /dev/null <<EOF
+Acquire::http::Proxy "$apt_http_proxy";
+Acquire::https::Proxy "$apt_https_proxy";
+EOF
+fi
+
+sudo apt-get update
+sudo apt-get install -y libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libnss3 libxss1 libasound2 libxtst6 xauth xvfb
+npm install
+npx cypress install