Use prebuilt Docker image for mega-sdk

Signed-off-by: lzzy12 <jhashivam2020@gmail.com>

Dockerfile

@@ -1,25 +1,10 @@
-FROM ubuntu:18.04
+FROM lzzy12/mega-sdk-python:latest
 
 WORKDIR /usr/src/app
 RUN chmod 777 /usr/src/app
 
 RUN apt-get -qq update
-RUN apt-get -qq install -y python3 python3-pip rar unzip git aria2 g++ gcc autoconf automake \
-    m4 libtool qt4-qmake make libqt4-dev libcurl4-openssl-dev \
-    libcrypto++-dev libsqlite3-dev libc-ares-dev \
-    libsodium-dev libnautilus-extension-dev \
-    libssl-dev libfreeimage-dev swig curl pv jq ffmpeg locales python3-lxml
-
-# Installing mega sdk python binding
-ENV MEGA_SDK_VERSION '3.6.4'
-RUN git clone https://github.com/meganz/sdk.git sdk
-WORKDIR sdk
-RUN git checkout v$MEGA_SDK_VERSION && ./autogen.sh && \
-    ./configure --disable-silent-rules --enable-python --disable-examples && \
-    make -j$(nproc --all) && cd bindings/python/ && \
-    python setup.py bdist_wheel && cd dist/ && \
-    pip install --no-cache-dir megasdk-$MEGA_SDK_VERSION-*.whl
-
+RUN apt-get -qq install -y p7zip-full aria2 curl pv jq ffmpeg locales python3-lxml
 
 COPY requirements.txt .
 COPY extract /usr/local/bin

extract

@@ -7,7 +7,7 @@ fi
 
 extract () {
 	arg="$1"
-		cd $(dirname "$arg")
+		cd "$(dirname "$arg")" || exit
             case "$arg" in
                 *.tar.bz2) 
 					tar xjf "$arg" --one-top-level ;;
@@ -20,15 +20,15 @@ extract () {
                 *.tgz) tar xzf "$arg" --one-top-level ;;
                 *.zip)
 					a_dir=`expr "$arg" : '\(.*\).zip'`
-					unzip "$arg" -d "$a_dir"       ;;
+					7z "$arg" -o"$a_dir"       ;;
                 *.Z)  uncompress "$arg"   ;;
-                *.rar)   
+                *.rar)
 					a_dir=`expr "$arg" : '\(.*\).rar'` ;
 					mkdir "$a_dir" ;
-					rar x "$arg"  "$a_dir"      ;;  # 'rar' must to be installed
+					7z x "$arg" -o"$a_dir"      ;;
                 *)          echo "'$arg' cannot be extracted via extract()" ;;
             esac
-		cd -
+		cd - || exit
 }
 
 extract "$1"