docker

.idx/dev.nix

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+# To learn more about how to use Nix to configure your environment
+# see: https://firebase.google.com/docs/studio/customize-workspace
+{ pkgs, ... }: {
+  # Which nixpkgs channel to use.
+  channel = "stable-24.05"; # or "unstable"
+
+  # Use https://search.nixos.org/packages to find packages
+  packages = [
+    # pkgs.go
+    # pkgs.python311
+    # pkgs.python311Packages.pip
+    # pkgs.nodejs_20
+    # pkgs.nodePackages.nodemon
+  ];
+
+  # Sets environment variables in the workspace
+  env = {};
+  idx = {
+    # Search for the extensions you want on https://open-vsx.org/ and use "publisher.id"
+    extensions = [
+      # "vscodevim.vim"
+    ];
+
+    # Enable previews
+    previews = {
+      enable = true;
+      previews = {
+        # web = {
+        #   # Example: run "npm run dev" with PORT set to IDX's defined port for previews,
+        #   # and show it in IDX's web preview panel
+        #   command = ["npm" "run" "dev"];
+        #   manager = "web";
+        #   env = {
+        #     # Environment variables to set for your server
+        #     PORT = "$PORT";
+        #   };
+        # };
+      };
+    };
+
+    # Workspace lifecycle hooks
+    workspace = {
+      # Runs when a workspace is first created
+      onCreate = {
+        # Example: install JS dependencies from NPM
+        # npm-install = "npm install";
+      };
+      # Runs when the workspace is (re)started
+      onStart = {
+        # Example: start a background task to watch and re-build backend code
+        # watch-backend = "npm run watch-backend";
+      };
+    };
+  };
+}

.idx/integrations.json

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+{
+  "cloud_run_deploy": {}
+}

Dockerfile

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+# Use an official Python runtime as a parent image
+FROM python:3.9-slim
+
+# Set the working directory in the container
+WORKDIR /app
+
+# Copy the requirements file and install the dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the application code
+COPY . .
+
+# Expose the port that Streamlit runs on
+EXPOSE 8501
+
+# Run the Streamlit app
+CMD ["streamlit", "run", "travel_ui.py"]