gpg --batch --keyserver keyserver.ubuntu.com --recv-keys EAC843EBD3EFDB98CC772FADA5CD6035332FA671;
TODO find a good link for users to verify this key is right (https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2019-April/000951.html is one of the only mentions of it I can find); perhaps a note added to https://adoptopenjdk.net/upstream.html would make sense? no-self-sigs-only: https://salsa.debian.org/debian/gnupg2/commit/c93ca04a53569916308b369c8b218dad5ae8fe07gpg --batch --keyserver keyserver.ubuntu.com --keyserver-options no-self-sigs-only --recv-keys CA5F11C6CE22644D42C6AC4492EF8D39DC13168F;
gpg --batch --list-sigs --keyid-format 0xLONG CA5F11C6CE22644D42C6AC4492EF8D39DC13168F
| tee /dev/stderr
| grep ‘0xA5CD6035332FA671’
| grep ‘Andrew Haley’;
gpg --batch --verify openjdk.tgz.asc openjdk.tgz;
rm -rf “$GNUPGHOME”;
mkdir -p “$JAVA_HOME”;
tar --extract
–file openjdk.tgz
–directory “$JAVA_HOME”
–strip-components 1
–no-same-owner
;
rm openjdk.tgz*;
rm -rf “$JAVA_HOME/jre/lib/security/cacerts”;
see “update-ca-trust” script which creates/maintains this cacerts bundleln -sT /etc/pki/ca-trust/extracted/java/cacerts “$JAVA_HOME/jre/lib/security/cacerts”;
https://github.com/oracle/docker-images/blob/a56e0d1ed968ff669d2e2ba8a1483d0f3acc80c0/OracleJava/java-8/Dockerfile#L17-L19ln -sfT “$JAVA_HOME” /usr/java/default;
ln -sfT “$JAVA_HOME” /usr/java/latest;
for bin in “$JAVA_HOME/bin/”*; do
base=“ ( base n a m e " (basename " (basename"bin”)";
[ ! -e “/usr/bin/$base” ];
alternatives --install “/usr/bin/ base " " base" " base""base” “$bin” 20000;
done;
basic smoke testjavac -version;
java -version
写完之后执行docker build -t bolingcavalry/centos7.6-jdk8:0.0.1 .即可生成镜像，如果您有hub.docker.com的账号，还可以将其推送到中央仓库，给更多人使用
用history命令看看镜像内容，详情如下，合计五百多兆，已经不小了：
CN0014009475M:~ will$ docker history bolingcavalry/centos7.6-jdk8:0.0.1
IMAGE CREATED CREATED BY SIZE COMMENT
a5dead4a6505 2 days ago /bin/sh -c set -eux; arch="$(objdump… 209MB
2 days ago /bin/sh -c #(nop) ENV LANG=C.UTF-8 0B
2 days ago /bin/sh -c #(nop) ENV PATH=/usr/java/openjd… 0B
2 days ago /bin/sh -c #(nop) ENV JAVA_HOME=/usr/java/o… 0B
2 days ago /bin/sh -c set -eux; yum install -y … 144MB
2 years ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B
2 years ago /bin/sh -c #(nop) LABEL org.label-schema.sc… 0B
2 years ago /bin/sh -c #(nop) ADD file:54b004357379717df… 202MB
我这里已经推送到hub.docker.com上去了，执行以下命令即可下载到本地：
docker pull bolingcavalry/centos7.6-jdk8:0.0.3
CentOS+JDK+OpenCV镜像接下来可以集成OpenCV了，Dockerfile内容如下所示，基础镜像是刚刚做好的bolingcavalry/centos7.6-jdk8:0.0.1，先是安装一大堆编译所需的应用，然后下载OpenCV-3.4.3版本的源码，然后编译，就这么简单（但其间的调试工作还是不少的，不说了，说多了都是泪）：
FROM bolingcavalry/centos7.6-jdk8:0.0.1
RUN echo “export LC_ALL=en_US.UTF-8” >> /etc/profile
&& source /etc/profile
RUN set -eux;
yum install -y
make
cmake
gcc
gcc-c++
gtk±devel
gimp-devel
gimp-devel-tools
gimp-help-browser
zlib-devel
libtiff-devel
libjpeg-devel
libpng-devel
gstreamer-devel
libavc1394-devel
libraw1394-devel
libdc1394-devel
jasper-devel
jasper-utils
swig
python
libtool
nasm
build-essential
ant
unzip
;
RUN set -eux;
curl -fL -o opencv-3.4.3.zip https://codeload.github.com/opencv/opencv/zip/3.4.3;
unzip opencv-3.4.3.zip;
rm -rf opencv-3.4.3.zip;
cd opencv-3.4.3;
mkdir build;
cd build;
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local …;
make;
make install;
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -DBUILD_TESTS=OFF …;
make -j8;
make install
写完之后执行docker build -t bolingcavalry/opencv3.4.3:0.0.3 .即可生成镜像，如果您有hub.docker.com的账号，还可以将其推送到中央仓库，给更多人使用
用history命令看看镜像内容，详情如下，倒吸一口凉气，这么大的体积，亲爱的读者们会不会打死我…：
CN0014009475M:~ will$ docker history bolingcavalry/opencv3.4.3:0.0.3
IMAGE CREATED CREATED BY SIZE COMMENT
f0306d7a2594 2 days ago /bin/sh -c set -eux; curl -fL -o opencv-… 2.99GB
2 days ago /bin/sh -c set -eux; yum install -y … 638MB
2 days ago /bin/sh -c echo “export LC_ALL=en_US.UTF-8” … 1.84kB
2 days ago /bin/sh -c set -eux; arch="$(objdump… 209MB
2 days ago /bin/sh -c #(nop) ENV LANG=C.UTF-8 0B
2 days ago /bin/sh -c #(nop) ENV PATH=/usr/java/openjd… 0B
2 days ago /bin/sh -c #(nop) ENV JAVA_HOME=/usr/java/o… 0B
2 days ago /bin/sh -c set -eux; yum install -y … 144MB
2 years ago /bin/sh -c #(nop) CMD ["/bin/bash"] 0B
2 years ago /bin/sh -c #(nop) LABEL org.label-schema.sc… 0B
2 years ago /bin/sh -c #(nop) ADD file:54b004357379717df… 202MB
我这里已经推送到hub.docker.com上去了，执行以下命令即可下载到本地：
