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# --- *** *** --- # # Java Home Develop Environment with Docker, openjdk 17 # # from OS Linux Mint 21. # # --- *** *** --- # Index: --- 1 --- download image debian:12 from hub docker --- --- 2 --- create the Dockerfile file --- --- 3 --- create image from debian 12 --- --- 4 --- test the image created --- --- 5 --- run sshd service and pass to user root. --- 6 --- allow user root sign on ssh. --- 7 --- enside container test the compiler. --- 8 --- join container with vscode with ssh. --- youtube --- https://youtu.be/CXL-NVxZnfY --- github repository --- Develop Enviroment: --- Linux Mint 21.2 Mate x64. Docker version 24.0.7, build 24.0.7-0ubuntu2~22.04.1 git version 2.34.1 Github Desktop version 3.2.0-linux1 (x64) Visual Studio Code version 1.96.4 --- --- 1 --- download image debian:12 from hub docker --- $ sudo docker pull debian:12 // download docker image. $ sudo docker images |grep debian // check if download is ok. $ cd ~/Documents/GitHub/docker/java/openjdk $ sudo chmod 777 -Rvf ../openjdk $ sudo chown nobody:nogroup -Rvf ../openjdk --- 2 --- Create the Dockerfile file --- $ touch Dockerfile $ nano Dockerfile $ cat Dockerfile --- FROM debian:12 RUN apt update RUN apt install -y default-jdk RUN apt install -y default-jre RUN apt install -y openssh-server RUN apt install -y nano EXPOSE 22 RUN mkdir /app WORKDIR /app --- --- 3 --- create image from debian 12 --- $ sudo docker build -t debian-openjdk17:develop . $ sudo docker images |grep openjdk17 --- debian-openjdk17 develop ee918f7f25b0 8 hours ago 815MB --- --- 4 --- !test the image created * !container delete on exit *--- $ sudo docker run --rm -it \ -v ~/Documents/GitHub/docker/java/openjdk:/app \ --interactive --tty --entrypoint /bin/bash debian-openjdk17:develop debian-openjdk17:develop /bin/bash --- finally we create the java develop container. $ sudo docker run --rm -p 22:22 \ --net bridge \ -v ~/Documents/GitHub/docker/java/openjdk:/app \ -v ~/Documents/GitHub/docker/java/openjdk/ssh:/etc/ssh \ -v ~/Documents/GitHub/docker/java/openjdk/code:/root \ -it debian-openjdk17:develop /bin/bash $ sudo docker run --rm -p 22:22 \ --net homenet \ -v ~/Documents/GitHub/docker/java/openjdk:/app \ -v ~/Documents/GitHub/docker/java/openjdk/ssh:/etc/ssh \ -v ~/Documents/GitHub/docker/java/openjdk/code:/root \ -it debian-openjdk17:develop /bin/bash --- 5 ---- !run sshd service and pass to user root. ! Important this, we need be sure the service always be runing. $ /etc/init.d/ssh start && /etc/init.d/ssh status $ passwd root --> abc123 --- 6 --- !allow user root sign on ssh. !important for connect from vscode. $ cat /etc/ssh/sshd_config |grep PermitRootLogin --- PermitRootLogin yes --- --- 7 --- !enside container test the compiler. $ java --version $ javac -version $ nano HelloWorld.java // create java file. $ javac HelloWorld.java //compile the file. $ java HelloWorld // execute Hello World --- 8 --- !join container with vscode with ssh. --- !we need to know what is container ip address. $ sudo docker ps $ sudo docker inspect -f \ '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' \ container-id-number --- !we need have ssh extensions installed. --- ping the ip addres from host --- connect vscode and the container. --- from the shell compile and execute .class files. $ javac HelloWorld.java //compile the file. $ java HelloWorld // execute Hello World --- bibliography --- https://introcs.cs.princeton.edu/java/11hello/
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OpenJDK 17, javac, java on docker from Mint 21 and vscode.
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