Mendix 构建Docker镜像

1、使用最新版Mendix Docker Buildpack

 　　https://github.com/mendix/docker-mendix-buildpack/tree/latest 

2、克隆最新版Buildpack，修改<TAG>

　　这里会产生一个docker-mendix-buildpack文件夹，以后所有的工作都在这个文件夹下进行

　　git clone --branch <TAG> --config core.autocrlf=false https://github.com/mendix/docker-mendix-buildpack

 3、安装Docker 

　　yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
　　yum install -y docker-ce
　　service docker start
　　systemctl enable docker.service

4、创建基础镜像

　　docker build -t mendix-rootfs:app -f rootfs-app.dockerfile .　　

    docker build -t mendix-rootfs:builder -f rootfs-builder.dockerfile .

　　4.1、rootfs-builder.dockerfile这个基础镜像需要特殊处理，在安装mono依赖的时候经常超时，所以需要下载依赖，手动安装

　　4.2、安装一个registry.access.redhat.com/ubi8/ubi-minimal:latest镜像，运行容器后，在容器里运行下面命令，下载所有依赖

　　　　最容易在这里失败，Mono这个站点下载依赖巨慢，导致超时，或者安装不完全导致错误。https://download.mono-project.com/repo/centos8-stable/。找一个网络环境好的机器把依赖下载下来。

yum install mono-core-5.20.1.34 --downloadonly --downloaddir=/opt/mendix/mono/

　　4.3、在docker-mendix-buildpack下创建一个depen，把下载好的依赖放到depen中

　　4.4、修改rootfs-builder.dockerfile为下面

# Dockerfile to create a Mendix Docker image based on either the source code or
# Mendix Deployment Archive (aka mda file)
FROM --platform=linux/amd64 registry.access.redhat.com/ubi8/ubi-minimal:latest
#This version does a full build originating from the Ubuntu Docker images
LABEL Author="Mendix Digital Ecosystems"
LABEL maintainer="[email protected]"
# Set the locale
ENV LANG C.UTF-8
ENV LC_ALL C.UTF-8
# CF buildpack version
ARG CF_BUILDPACK=v5.0.16
# CF buildpack download URL
ARG CF_BUILDPACK_URL=https://kkgithub.com/mendix/cf-mendix-buildpack/releases/download/${CF_BUILDPACK}/cf-mendix-buildpack.zip
# Set the user ID
ARG USER_UID=1001
ENV USER_UID=${USER_UID}
# Allow specification of debugging options
ARG BUILDPACK_XTRACE
# Add mono repo
COPY --chown=0:0 scripts/mono/xamarin.gpg /etc/pki/rpm-gpg/RPM-GPG-KEY-mono-centos8-stable
COPY --chown=0:0 scripts/mono/mono-centos8-stable.repo /etc/yum.repos.d/mono-centos8-stable.repo
#修改的地方1： Copy denpendencies
COPY --chown=0:0 /depen /opt/depen/ 
# install dependencies & remove package lists
RUN rpm -ivh https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm && \
    sed -i 's|^#baseurl=https://download.example/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel* && \
    sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel* && \   
    microdnf update -y && \
    microdnf module enable nginx:1.20 -y && \
    microdnf install -y wget curl glibc-langpack-en python311 openssl tar gzip unzip libpq nginx nginx-mod-stream binutils fontconfig findutils binutils && \
    microdnf clean all && rm -rf /var/cache/yum
 
#修改的地方2： install dependencies
RUN rpm -ivh --nodeps --force /opt/depen/*
 
#修改的地方3：去掉mono-core-5.20.1.34 libgdiplus0两个依赖，上面手动安装了
RUN microdnf install -y java-11-openjdk-headless java-11-openjdk-devel tzdata-java  libicu && \
    microdnf clean all && rm -rf /var/cache/yum
# Set nginx permissions
RUN touch /run/nginx.pid && \
    chown -R 1001:0 /var/log/nginx /var/lib/nginx /run/nginx.pid &&\
    chmod -R g=u /var/log/nginx /var/lib/nginx /run/nginx.pid
# Pretend to be Ubuntu to bypass CF Buildpack's check
RUN rm /etc/*-release && printf 'NAME="Ubuntu"\nID=ubuntu\nVersion="22.04 LTS (Jammy Jellyfish)"\nVERSION_CODENAME=jammy\n' > /etc/os-release
# Set python alias to python3 (required for Datadog)
RUN alternatives --set python /usr/bin/python3
# Download and prepare CF Buildpack
# Switch CF Buildpack to use Python 3.10+ compatibility
ENV CF_STACK cflinuxfs4
# Each comment corresponds to the script line:
# 1. Create all directories needed by scripts
# 2. Download CF buildpack
# 3. Extract CF buildpack
# 4. Delete CF buildpack zip archive
# 5. Update ownership of /opt/mendix so that the app can run as a non-root user
# 6. Update permissions of /opt/mendix so that the app can run as a non-root user
RUN mkdir -p /opt/mendix/buildpack /opt/mendix/build &&\
    ln -s /root /home/vcap &&\
    echo "Downloading CF Buildpack from ${CF_BUILDPACK_URL}" &&\
    curl -fsSL ${CF_BUILDPACK_URL} -o /tmp/cf-mendix-buildpack.zip && \
    python3 -m zipfile -e /tmp/cf-mendix-buildpack.zip /opt/mendix/buildpack/ &&\
    rm /tmp/cf-mendix-buildpack.zip &&\
    chown -R ${USER_UID}:0 /opt/mendix &&\
    chmod -R g=u /opt/mendix
# Copy python scripts which execute the buildpack (exporting the VCAP variables)
COPY scripts/compilation.py scripts/git scripts/mono-adapter /opt/mendix/buildpack/
# Install the buildpack Python dependencies
RUN PYTHON_BUILD_RPMS="python3.11-pip python3.11-devel libffi-devel gcc" && \
    microdnf install -y $PYTHON_BUILD_RPMS && \
    rm /opt/mendix/buildpack/vendor/wheels/* && \
    chmod +rx /opt/mendix/buildpack/bin/bootstrap-python && /opt/mendix/buildpack/bin/bootstrap-python /opt/mendix/buildpack /tmp/buildcache && \
    microdnf remove -y $PYTHON_BUILD_RPMS && microdnf clean all && rm -rf /var/cache/yum
# Add the buildpack modules
ENV PYTHONPATH "$PYTHONPATH:/opt/mendix/buildpack/lib/:/opt/mendix/buildpack/:/opt/mendix/buildpack/lib/python3.11/site-packages/"

5、在docker-mendix-buildpack下创建project文件夹，把Mendix应用目录下文件拷贝到这个文件夹下 

6、运行docker命令创建Mendix应用镜像

docker build --tag mendix/mendix-buildpack:v1.2 .

7、创建一个postgres数据库镜像

docker run -id --name=postgresql   -p 5432:5432 -e POSTGRES_PASSWORD=123456 -e LANG=C.UTF-8 postgres

8、运行mendix应用镜像，注意ADMIN_PASSWORD参数，必须符合密码策略

docker run -it --link=postgresql  -e ADMIN_PASSWORD=Pass123@word -e DATABASE_ENDPOINT=postgres://postgres:123456@postgresql:5432/mendix mendix/mendix-buildpack:v1.2  

到这里基本Mendix应用就可以运行了。