consumerui ui dockerfile optimization (#1394)

consumerui ui dockerfile optimization

Author: SuyogShinde942

consumerui/Dockerfile

@@ -1,22 +1,58 @@
+# Use a minimal base image
 FROM ubuntu:20.04
 
-RUN apt-get update -y && DEBIAN_FRONTEND=noninteractive apt-get install -y tzdata && apt-get install -y python3-pip python-setuptools  curl wget tar sudo apt-transport-https ca-certificates socat python-yaml vim graphviz
+# Set environment variables for non-interactive installs and paths
+ENV DEBIAN_FRONTEND=noninteractive \
+    KUBEPLUS_HOME=/root
 
-RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" && sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
+# Update and install only required packages in a single RUN to minimize layers
+RUN apt-get update -y && apt-get install -y --no-install-recommends \
+    tzdata \
+    python3-pip \
+    python3-setuptools \
+    curl \
+    wget \
+    tar \
+    sudo \
+    apt-transport-https \
+    ca-certificates \
+    socat \
+    python3-yaml \
+    vim \
+    graphviz && \
+    # Clean up to reduce image size
+    apt-get clean && rm -rf /var/lib/apt/lists/*
 
-RUN cp /usr/bin/python3.8 /usr/bin/python
+# Install kubectl
+RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl" && \
+    install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl && \
+    rm kubectl
 
-RUN wget https://github.com/cloud-ark/kubeplus/raw/master/kubeplus-kubectl-plugins.tar.gz && gunzip kubeplus-kubectl-plugins.tar.gz && tar -xvf kubeplus-kubectl-plugins.tar && cp -r /plugins/* bin/
+# Create symbolic link for Python
+RUN ln -s /usr/bin/python3 /usr/bin/python
 
-ENV KUBEPLUS_HOME /
+# Install KubePlus plugins
+RUN wget https://github.com/cloud-ark/kubeplus/raw/master/kubeplus-kubectl-plugins.tar.gz && \
+    tar -xzf kubeplus-kubectl-plugins.tar.gz && \
+    mv plugins/* /usr/local/bin/ && \
+    rm -rf kubeplus-kubectl-plugins.tar.gz kubeplus-kubectl-plugins.tar
 
-ADD requirements.txt /root/requirements.txt
-ADD consumerui.py /root/consumerui.py
-ADD grapher.py /root/grapher.py
-ADD templates /root/templates
-ADD static /root/static
-RUN cd /root; pip install -r requirements.txt
-RUN mkdir /root/.kube/
+# Add application source files
+WORKDIR /root
+ADD requirements.txt /root/
+ADD consumerui.py /root/
+ADD grapher.py /root/
+ADD templates /root/templates/
+ADD static /root/static/
 
+# Install Python dependencies
+RUN pip3 install --no-cache-dir -r requirements.txt
+
+# Create necessary directories
+RUN mkdir -p /root/.kube/
+
+# Expose the application port
 EXPOSE 5000
+
+# Set the entrypoint
 CMD ["python3", "/root/consumerui.py"]