Fix app and fibonacci modules, Dockerfile and installer

Dockerfile

@@ -5,7 +5,7 @@ FROM python:3.11-slim AS builder
 
 # Instalar herramientas necesarias solo en el stage de build
 RUN apt-get update \
-    && apt-get install -y --no-install-recommends build-essential gcc libffi-dev \
+    && apt-get install -y --no-install-recommends build-essential gcc libffi-dev wget ca-certificates tar \
     && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
@@ -15,6 +15,13 @@ COPY requirements.txt ./requirements.txt
 RUN python -m pip install --upgrade pip setuptools wheel \
     && python -m pip install --no-cache-dir --prefix=/install -r requirements.txt
 
+# Descargar y extraer openvscode-server en el stage de build (no queda en la imagen final si no se copia)
+RUN wget https://github.com/gitpod-io/openvscode-server/releases/download/openvscode-server-v1.101.2/openvscode-server-v1.101.2-linux-x64.tar.gz -O /tmp/openvscode-server.tar.gz \
+    && tar -xzf /tmp/openvscode-server.tar.gz -C /opt \
+    && rm /tmp/openvscode-server.tar.gz \
+    && mv /opt/openvscode-server-v1.101.2-linux-x64 /opt/openvscode-server \
+    && chown -R 1000:1000 /opt/openvscode-server
+
 # --- Final minimal image ---
 FROM python:3.11-slim
 
@@ -30,6 +37,10 @@ WORKDIR /app
 # Copiar los paquetes instalados desde el builder al entorno de runtime
 COPY --from=builder /install /usr/local
 
+# Copiar openvscode desde el builder (ya está listo en /opt/openvscode-server)
+COPY --from=builder /opt/openvscode-server /opt/openvscode-server
+RUN chown -R 1000:1000 /opt/openvscode-server || true
+
 # Copiar código y asignar al user no-root
 COPY --chown=user:user . /app
 

fibonacci.py

@@ -0,0 +1,10 @@
+def fibonacci(n: int):
+    """Devuelve una lista con los primeros n términos de Fibonacci."""
+    if n <= 0:
+        return []
+    if n == 1:
+        return [0]
+    seq = [0, 1]
+    for _ in range(2, n):
+        seq.append(seq[-1] + seq[-2])
+    return seq[:n]