REST API Swagger code generation using Docker

swagger/docker/codegen/Dockerfile

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+FROM ubuntu:20.04 AS base
+ARG uid
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Create a user with sudo rights
+RUN apt-get update && apt-get -y install sudo
+RUN useradd -m appuser -u ${uid} && echo "appuser:appuser" | chpasswd \
+   && adduser appuser sudo \
+   && sudo usermod --shell /bin/bash appuser
+RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+USER appuser
+
+# Configure tzdata manually before anything else
+ENV TZONE=Europe/Paris
+RUN sudo ln -fs /usr/share/zoneinfo/$TZONE /etc/localtime \
+    && sudo apt-get update && sudo apt-get -y install tzdata
+
+# Base packages required
+RUN sudo apt-get update && sudo apt-get -y install \
+    git \
+    vim \
+    wget \
+    maven \
+    openjdk-8-jdk
+
+# Prepare buiid and install environment
+RUN sudo mkdir /opt/build /opt/install \
+    && sudo chown appuser:appuser /opt/build /opt/install
+
+# swagger-codegen
+FROM base as codegen_clone
+ARG clone_label
+WORKDIR /opt/build
+RUN git clone --depth 1 https://github.com/f4exb/swagger-codegen.git -b sdrangel \
+    && cd swagger-codegen \
+    && mkdir build \
+    && echo "${clone_label}" > build/clone_label.txt
+
+FROM base as codegen_build
+COPY --from=codegen_clone --chown=appuser /opt/build/swagger-codegen /opt/build/swagger-codegen
+WORKDIR /opt/build/swagger-codegen
+RUN export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 \
+    && mvn clean package
+RUN mkdir -p /opt/install/swagger \
+    && cp ./modules/swagger-codegen-cli/target/swagger-codegen-cli.jar /opt/install/swagger
+
+FROM base as codegen
+RUN mkdir -p /opt/build/sdrangel/swagger/sdrangel
+COPY --from=codegen_build --chown=appuser /opt/install/swagger /opt/install/swagger
+COPY swagger-codegen /opt/install/swagger
+
+WORKDIR /opt/build/sdrangel/swagger/sdrangel