fixup! [Dockerfile] add file

Author: diivm

Dockerfile

@@ -6,10 +6,10 @@ COPY . .
 RUN apt-get update && apt-get install -y python3-pip build-essential wget
 
 # Install libclang via development branch on https://apt.llvm.org/
-RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
-RUN echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' | tee -a /etc/apt/sources.list
-RUN echo 'deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' | tee -a /etc/apt/sources.list
-RUN apt-get install -y libclang-12-dev python3-clang-12
+RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -;\
+	echo 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' | tee -a /etc/apt/sources.list;\
+	echo 'deb-src http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main' | tee -a /etc/apt/sources.list;\
+	apt-get install -y libclang-12-dev python3-clang-12
 
 RUN pip install -r requirements.txt