Optimize dockerfile to reduce image size (#136)

Signed-off-by: jaehee329 <[email protected]>

Dockerfile

@@ -1,26 +1,23 @@
 # Copyright (c) 2021 LG Electronics Inc.
 # SPDX-License-Identifier: Apache-2.0
-FROM	ubuntu:20.04
+FROM python:3.8-slim-buster
 
-RUN     apt-get clean
-RUN 	apt-get update && apt-get install sudo -y
-RUN	ln -sf /bin/bash /bin/sh
+RUN ln -sf /bin/bash /bin/sh && \
+    apt-get update && \
+    apt-get install --no-install-recommends -y \
+    build-essential \
+    python3 python3-distutils python3-pip python3-dev python3-magic \
+    libxml2-dev libxslt1-dev libhdf5-dev bzip2 xz-utils zlib1g libpopt0 && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-COPY	. /app
 WORKDIR	/app
 
-ENV 	DEBIAN_FRONTEND=noninteractive
+COPY . /app
 
-RUN	apt-get -y install build-essential
-RUN     apt-get -y install python3 python3-distutils python3-pip python3-dev
-RUN	apt-get -y install python3-intbitset python3-magic
-RUN	apt-get -y install libxml2-dev
-RUN	apt-get -y install libxslt1-dev
-RUN 	apt-get -y install libhdf5-dev
-RUN 	apt-get -y install bzip2 xz-utils zlib1g libpopt0 
-RUN	apt-get -y install gcc-10 g++-10
-RUN	pip3 install --upgrade pip
-RUN	pip3 install .
-RUN	pip3 install dparse
+RUN pip3 install --upgrade pip && \
+    pip3 install . && \
+    pip3 install dparse && \
+    rm -rf ~/.cache/pip /root/.cache/pipe
 
-ENTRYPOINT ["/usr/local/bin/fosslight_source"] 
+ENTRYPOINT ["/usr/local/bin/fosslight_source"]

requirements.txt

@@ -5,4 +5,5 @@ typecode-libmagic
 fosslight_util>=1.4.28
 PyYAML
 wheel>=0.38.1
+intbitset
 fosslight_binary