i am building multi module springboot application and i want to setup docker environmenta, but unable to build container, can someone please help me to solve this issue.
My Docker file is mentioned below.
FROM openjdk:8-jdk
RUN apt-get update && apt-get install -y unzip
MAINTAINER zaihamm
COPY . .
WORKDIR /app/orderme
RUN curl -L https://services.gradle.org/distributions/gradle-7.1-bin.zip -o gradle-
7.1-bin.zip
RUN unzip gradle-7.1-bin.zip
ENV GRADLE_HOME=/app/orderme/gradle/gradle-7.1
ENV PATH=$PATH:$GRADLE_HOME/bin
RUN gradle --version
RUN ./gradlew :admin-service:build -x test
ENTRYPOINT ["java", "-jar","/admin-service/build/libs/admin-service.jar"]
when i run docker build -t orderme ./ its giving error
Unzip do not create extra "gradle" directory - line 8 should look like:
ENV GRADLE_HOME=/app/orderme/gradle-7.1
Related
I am trying to create a Docker container for a micro-service in SpringBoot Java in Ubuntu 21.10, but when I try to build the container I get this error, maybe it is a common error, but so far I can't solve it, I have checked some posts on Internet but had no luck finding a similar solution. Please I would really appreciate the help! Thank you in advance
This is my Dockerfile:
FROM ubuntu
RUN yum install -y java
VOLUME /tmp
ADD target/microservice-0.0.1-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENTRYPOINT ["java", "-Djava.security.egd-file:/dev/./urandom","-jar","/app.jar"]
This is the error I get:
docker build -t spring_boot_docker .
Sending build context to Docker daemon 17.72MB
Step 1/6 : FROM ubuntu
---> 54c9d81cbb44
Step 2/6 : RUN yum install -y java
---> Running in a2793e79925b
/bin/sh: 1: yum: not found
The command '/bin/sh -c yum install -y java' returned a non-zero code: 127
In ubuntu you can try installing with apt-get:
RUN apt-get update && \
apt-get install -y openjdk-8-jdk
I am new to docker, and I am trying to setup docker for spring boot project.
Here is my Dockerfile
FROM maven:3.6.3-jdk-11-slim AS build
WORKDIR usr/src/springboot
COPY . ./
RUN mvn install
RUN mvn clean package
#
# Package stage
#
FROM openjdk:11-jre-slim
ARG JAR_NAME="springboot-0.0.1-SNAPSHOT"
WORKDIR /usr/src/springboot
EXPOSE 8080
COPY --from=build /usr/src/springboot/target/${JAR_NAME}.jar ./springboot.jar
CMD ["java","-jar", "./springboot.jar"]
Which works completely fine and I can access hello world from localhost:8080
But my confusion is how to make any changes in java file reflect in the docker container? how do I recompile the .jar file.
I tried something like docker exec -it strange_shaw "mvn clean package"
But it throws error exec: "mvn clean package": executable file not found in $PATH: unknown
when you are using double FROM instruction inside your Dockerfile , Docker will keep only the latest FROM and use the previous FROM to build the next one.
So it is simple to find this error because FROM maven:3.6.3-jdk-11-slim AS build only used to build the next step FROM openjdk:11-jre-slim and will be removed from the final image(this strategy used to minimize the docker image size).
I hope that give you a clear idea about Dockerfile with multiple stage.
Build your jar outside after your Dockerfile will be like that:
FROM openjdk:11-jre-slim
ARG JAR_NAME="springboot-0.0.1-SNAPSHOT"
WORKDIR /usr/src/springboot
EXPOSE 8080
COPY /usr/src/springboot/target/${JAR_NAME}.jar ./springboot.jar
CMD ["java","-jar", "./springboot.jar"]
The issue was that maven was not installed within the container. So I changed my Dockerfile to
FROM openjdk:11
ARG JAR_NAME="springboot-0.0.1-SNAPSHOT"
WORKDIR /usr/src/springboot
EXPOSE 8080
#COPY --from=build /usr/src/springboot/target/${JAR_NAME}.jar ./springboot.jar
#CMD ["java","-jar", "./springboot.jar"]
RUN apt-get update; apt-get install curl -y
ARG MAVEN_VERSION=3.6.3
# 2- Define a constant with the working directory
ARG USER_HOME_DIR="/root"
# 4- Define the URL where maven can be downloaded from
ARG BASE_URL=https://apache.osuosl.org/maven/maven-3/${MAVEN_VERSION}/binaries
# 5- Create the directories, download maven, validate the download, install it, remove downloaded file and set links
RUN mkdir -p /usr/share/maven /usr/share/maven/ref \
&& echo "Downloading maven" \
&& curl -fsSL -o /tmp/apache-maven.tar.gz ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
\
&& echo "Unziping maven" \
&& tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
\
&& echo "Cleaning and setting links" \
&& rm -f /tmp/apache-maven.tar.gz \
&& ln -s /usr/share/maven/bin/mvn /usr/bin/mvn
# 6- Define environmental variables required by Maven, like Maven_Home directory and where the maven repo is located
ENV MAVEN_HOME /usr/share/maven
ENV MAVEN_CONFIG "$USER_HOME_DIR/.m2"
This will install maven inside the container and set $PATH
docker run -it -v "$(pwd)":/usr/src/springboot -p 8080:8080 spring-boot-app
Run above command to start container and map your project folder to container folder and local port to container port. So both are in sync if you do any changes in project.
docker exec -it <container_name> mvn verify
Above command will create the .jar file. Restart the container.
docker exec -it <container_name> java -jar target/<file_name>.jar
Will execute the jar file in port 8080 and will be accessible in your localhost:8080
I am naive in software development. I want to run a jar file from Dkron Scheduler using cron job. I am running dkron in docker(using docker-compose up). I am passing "command": "java --version" to see if I can run java from Dkron. As docker do not have java installed I changed the dockerfile.hub file to this:
FROM alpine
LABEL maintainer="Victor Castell <victor#victorcastell.com>"
RUN set -x \
&& buildDeps='bash ca-certificates openssl tzdata' \
&& apk add --update $buildDeps \
&& apk add openjava8 #add this line to install java
&& rm -rf /var/cache/apk/* \
&& mkdir -p /opt/local/dkron
ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk #add this line to install java
ENV PATH $PATH:$JAVA_HOME/bin #add this line to install java
EXPOSE 8080 8946
ENV SHELL /bin/bash
WORKDIR /opt/local/dkron
COPY dkron .
COPY dkron-* ./
ENTRYPOINT ["/opt/local/dkron/dkron"]
CMD ["--help"]
When I again do docker-compose up it do not give any error, still on passing "command": "java --version" by json through UI, dkron shows error - exec : "java" : executable file not found in $PATH.
What can I do to resolve it?
Thanks in advance.
I was able to create JVM in docker container using dkron as the base image, (publically available) and build another image on top of it.
Here is dockerfile I created for running java application
FROM dkron/dkron
WORKDIR /root/hello-world
COPY hello.java /root/hello-world
RUN apk add openjdk8
ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
ENV PATH $JAVA_HOME/bin:$PATH
RUN javac hello.java
Then I build image. Let id be xxx
Then I ran the image and build dkron server as
docker run -p 8080:8080 xxx agent --server --bootstrap-expect=1 --node-name=node1
Try this file
FROM alpine
LABEL maintainer="Victor Castell <victor#victorcastell.com>"
RUN set -x \
&& buildDeps='bash ca-certificates openssl tzdata' \
&& apk add --update $buildDeps \
&& apk add openjdk8 \
&& rm -rf /var/cache/apk/* \
&& mkdir -p /opt/local/dkron
ENV JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk
ENV PATH="$JAVA_HOME/bin:${PATH}"
EXPOSE 8080 8946
ENV SHELL /bin/bash
WORKDIR /opt/local/dkron
COPY dkron .
COPY dkron-* ./
ENTRYPOINT ["/opt/local/dkron/dkron"]
CMD ["--help"]
alpine package doesn't have openjava8 packages.
Edit: Update ENV variables
I'm trying to Dockerize a Gauge test automation project so I can run specs inside a Docker container. The project is written in Java and Spring Boot.
I saw this tutorial in Gauge documentation.
This is the DockerFile in the tutorial:
FROM ubuntu
# Install Java.
RUN apt-get update && apt-get install -q -y \
openjdk-8-jdk \
apt-transport-https \
gnupg2 \
ca-certificates
# Install gauge
RUN apt-key adv --keyserver hkp://ipv4.pool.sks-keyservers.net --recv-keys 023EDB0B && \
echo deb https://dl.bintray.com/gauge/gauge-deb stable main | tee -a /etc/apt/sources.list
RUN apt-get update && apt-get install gauge
# Install gauge plugins
RUN gauge install java && \
gauge install screenshot
ENV PATH=$HOME/.gauge:$PATH
As you see, there's no "ADD"/"COPY" there in the DokcerFile.
Is it just suggesting an alternative to install Gauge and the other packages on the host?
Any ideas on how to run the specs inside a Docker container?
Here is what I did to get the test running in the docker container.
I have a specs folder beside src in my project structure meaning the gauge tests will run using the JAR file but they're not part of the JAR file themselves.
--MyProject
----specs
----src
...
I used maven to run the test inside the container. That's why I preferred to build the project inside the container so I get the JAR file ready with the same version of maven I run the test with.
Here is the DockerFile. I developed a bash script to run the test. You may run the script with CMD or ENTRYPOINT:
FROM maven:3.6.1-jdk-8
# add any project resources needed
ADD env /home/e2e/env
ADD specs /home/e2e/specs
ADD src /home/e2e/src
ADD src/main/scripts/entrypoint.sh /home/e2e/
ADD pom.xml /home/e2e/
RUN ["chmod", "+x", "./home/e2e/entrypoint.sh"]
# Install Gauge, web browser and webdriver in your preferred way...
ENV PATH=$HOME/.gauge:$PATH
# I'm keeping the cntainer running. But it's all up to you.
CMD /home/e2e/entrypoint.sh && tail -f /dev/null
And then here is the simple entrypoint.sh script:
#!/bin/bash
cd /home/e2e/
mvn clean package
gauge --version
google-chrome --version
mvn -version
mvn gauge:execute -DspecsDir=specs/myTest.spec
Of course, you could just use a ready JAR instead of building it inside the container. Or you could build the JAR while creating the docker image.
I have a project running Vue & Spring Boot that I need to create a docker-compose.yml file to run mvn clean install to generate the .jar, and then build a "new" image from another Dockerfile with that said .jar inside the docker container.
This is the Dockerfile that needs to be run once the mvn clean install is completed:
FROM java:8
ENV WKHTML_VERSION 0.12.4
# Builds the wkhtmltopdf download URL based on version numbers above
ENV DOWNLOAD_URL "https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/${WKHTML_VERSION}/wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz"
RUN apt-get update && \
apt-get install -y --no-install-recommends wget && \
wget $DOWNLOAD_URL && \
tar vxf wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz && \
cp wkhtmltox/bin/wk* /usr/local/bin/ && \
cp wkhtmltox/lib/* /usr/local/lib/ && \
rm wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz
# #see https://spring.io/guides/gs/spring-boot-docker/
COPY server/target/redo-server-0.0.1-SNAPSHOT.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","app.jar"]
So the build steps need to be something like this:
Install node + maven / pull those images
Install postgresql & pull that image
Run mvn clean install & generate .jar
Build new image from abovementioned Dockerfile and run it
I am new to docker-compose so I am having troubles setting this up in the correct execution order.
The reason I need to do this is due to a problem with the production pipeline not having node or npm, which is needed to run the full maven application (Vue.js and Spring Boot app), which is why it needs to be compiled from inside the Docker container
It would be greatly appreciated if anyone could point me in the right direction, let alone – is this possible to do?
Solved by writing a multi-step build as my Dockerfile. I am installing node as a dependency in the client's pom.xml file.
# Install maven and copy project for compilation
FROM maven:latest as builder
COPY pom.xml /usr/local/pom.xml
COPY server /usr/local/server
COPY client /usr/local/client
WORKDIR /usr/local/
RUN mvn clean install
FROM openjdk:8
ENV WKHTML_VERSION 0.12.4
# Builds the wkhtmltopdf download URL based on version numbers above
ENV DOWNLOAD_URL "https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/${WKHTML_VERSION}/wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz"
RUN apt-get update && \
apt-get install -y --no-install-recommends wget && \
wget $DOWNLOAD_URL && \
tar vxf wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz && \
cp wkhtmltox/bin/wk* /usr/local/bin/ && \
cp wkhtmltox/lib/* /usr/local/lib/ && \
rm wkhtmltox-${WKHTML_VERSION}_linux-generic-amd64.tar.xz
COPY --from=builder /usr/local/redo/server/target/server-0.0.1-SNAPSHOT.jar app.jar
ENTRYPOINT ["java", "-Djava.security.egd=file:/dev/./urandom","-jar","app.jar"]