CODEWITHSUNDEEP
javagradlebuilddockerdockerfile
TPPZ
TPPZ

Reputation: 4891

Installing and using Gradle in a docker image/container

I am getting this strange error at the end of the process of creating a docker image from a Dockerfile:

/bin/sh: 1: gradle: not found
INFO[0003] The command [/bin/sh -c gradle test jar] returned a non-zero code: 127

The relevant part of the Dockerfile:

FROM debian:jessie
[...]
RUN curl -L https://services.gradle.org/distributions/gradle-2.4-bin.zip -o gradle-2.4-bin.zip
RUN apt-get install -y unzip
RUN unzip gradle-2.4-bin.zip
RUN echo 'export GRADLE_HOME=/app/gradle-2.4' >> $HOME/.bashrc
RUN echo 'export PATH=$PATH:$GRADLE_HOME/bin' >> $HOME/.bashrc
RUN /bin/bash -c "source $HOME/.bashrc"
RUN gradle test jar
[...]

The command I am using is: docker build -t java_i .

The strange thing is that if:

I eventually get the expected output (the compiled java code in the build folder).

I am using Docker version 1.6.2

Upvotes: 14

Views: 36335

Answers (4)

Emanuel Moecklin
Emanuel Moecklin

Reputation: 28856

You can use multi-stage builds and the Gradle Docker image (no need to install Gradle...) to build the application then use the result in the runtime container:

# Build
FROM gradle AS build

WORKDIR /appbuild
COPY . /appbuild

RUN gradle --version
# here goes your build code

Once the Gradle build is done, switch to the runtime container:

# Runtime
FROM openjdk:8-jre-alpine

# more stuff here...

COPY --from=0 appbuild/<somepath>/some.jar application.jar

# more stuff here...

The COPY command copies the build artifacts from the build phase to the runtime container (in this case a jar file).

Upvotes: 2

Adiii
Adiii

Reputation: 59926

I was trying to install same version with JDK 11.0.7 but gradle-2.4 does not work. and got below error


FAILURE: Build failed with an exception.

* What went wrong:
Could not determine java version from '11.0.7'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

I install later version to fix the above issue after installation.
Posting as an answer might help someone else.

FROM openjdk:11.0.7-jdk
RUN apt-get update && apt-get install -y unzip
WORKDIR /gradle
RUN curl -L https://services.gradle.org/distributions/gradle-6.5.1-bin.zip -o gradle-6.5.1-bin.zip
RUN unzip gradle-6.5.1-bin.zip
ENV GRADLE_HOME=/gradle/gradle-6.5.1
ENV PATH=$PATH:$GRADLE_HOME/bin
RUN gradle --version

Upvotes: 3

TPPZ
TPPZ

Reputation: 4891

I solved the problem using the ENV docker instructions (link to the documentation).

ENV GRADLE_HOME=/app/gradle-2.4
ENV PATH=$PATH:$GRADLE_HOME/bin

Upvotes: 15

Alex V
Alex V

Reputation: 1155

This command /bin/bash -c "source $HOME/.bashrc" means that you create a new non-interactive process and run a command in it to set environment variables there. Which does not affect the parent process. As soon as variables are set, process exits. You can check this by running something like this:

RUN /bin/bash -c "source $HOME/.bashrc; env"
RUN env

What should be working is this option:

RUN source ~/.bashrc

And the reason why it works when you log in, is because the new process reads already updated ~/.bashrc.

Upvotes: 5

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