How to install multiple openjdk versions on alpine-based docker container
I wish to install jdk7 and jdk8 on an alpine container side by side. I would like to pick jdk7 only if an env variable is set.
I've chained FROM openjdk:7-alpine
and FROM openjdk:8-alpine
, but regardless of their relative order, the latter one overwrites the former. So, I am left with only 1 installation as seen in '/usr/lib/jvm'
.
Why I need this:
I need this setup for a slave container for Jenkins. Now, jenkins remoting jar runs ONLY on jdk8 now. So, I need it. Plus, since I am spawning this container for a project which needs jdk7 as default jdk, I need that too.
My Dockerfile: https://github.com/ankurshashcode/docker-slave/blob/alpine/Dockerfile
java docker jenkins slave
add a comment |
I wish to install jdk7 and jdk8 on an alpine container side by side. I would like to pick jdk7 only if an env variable is set.
I've chained FROM openjdk:7-alpine
and FROM openjdk:8-alpine
, but regardless of their relative order, the latter one overwrites the former. So, I am left with only 1 installation as seen in '/usr/lib/jvm'
.
Why I need this:
I need this setup for a slave container for Jenkins. Now, jenkins remoting jar runs ONLY on jdk8 now. So, I need it. Plus, since I am spawning this container for a project which needs jdk7 as default jdk, I need that too.
My Dockerfile: https://github.com/ankurshashcode/docker-slave/blob/alpine/Dockerfile
java docker jenkins slave
add a comment |
I wish to install jdk7 and jdk8 on an alpine container side by side. I would like to pick jdk7 only if an env variable is set.
I've chained FROM openjdk:7-alpine
and FROM openjdk:8-alpine
, but regardless of their relative order, the latter one overwrites the former. So, I am left with only 1 installation as seen in '/usr/lib/jvm'
.
Why I need this:
I need this setup for a slave container for Jenkins. Now, jenkins remoting jar runs ONLY on jdk8 now. So, I need it. Plus, since I am spawning this container for a project which needs jdk7 as default jdk, I need that too.
My Dockerfile: https://github.com/ankurshashcode/docker-slave/blob/alpine/Dockerfile
java docker jenkins slave
I wish to install jdk7 and jdk8 on an alpine container side by side. I would like to pick jdk7 only if an env variable is set.
I've chained FROM openjdk:7-alpine
and FROM openjdk:8-alpine
, but regardless of their relative order, the latter one overwrites the former. So, I am left with only 1 installation as seen in '/usr/lib/jvm'
.
Why I need this:
I need this setup for a slave container for Jenkins. Now, jenkins remoting jar runs ONLY on jdk8 now. So, I need it. Plus, since I am spawning this container for a project which needs jdk7 as default jdk, I need that too.
My Dockerfile: https://github.com/ankurshashcode/docker-slave/blob/alpine/Dockerfile
java docker jenkins slave
java docker jenkins slave
edited Nov 23 '18 at 8:19
piet.t
10.1k73246
10.1k73246
asked Nov 15 '17 at 14:54
Ankur SawhneyAnkur Sawhney
1614
1614
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2 Answers
2
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oldest
votes
You should keep it simple and use one base image.
Use openjdk7
as base image, install openjdk8 as a package.
This will overwrite openjdk7 as the default JDK while leaving it in the image.
# Example Dockerfile
FROM openjdk:7-alpine
RUN apk add --no-cache openjdk8
# Other setup...
Verify
$> java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (IcedTea 3.4.0) (Alpine 8.131.11-r2)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)
$> ls /usr/lib/jvm/
default-jvm java-1.7-openjdk java-1.8-openjdk
add a comment |
You can use Docker multistage build to achieve that. You would basically copy the java installation from one image into another image. Here is what the dockerfile might look like:
FROM openjdk:7-alpine as java7
FROM openjdk:8-alpine
COPY --from=java7 /usr/lib/jvm/java-1.7-openjdk /usr/lib/jvm/java-1.7-openjdk
Now you will have both java installations with the jdk7 installation being under /usr/lib/jvm/java-1.7-openjdk
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You should keep it simple and use one base image.
Use openjdk7
as base image, install openjdk8 as a package.
This will overwrite openjdk7 as the default JDK while leaving it in the image.
# Example Dockerfile
FROM openjdk:7-alpine
RUN apk add --no-cache openjdk8
# Other setup...
Verify
$> java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (IcedTea 3.4.0) (Alpine 8.131.11-r2)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)
$> ls /usr/lib/jvm/
default-jvm java-1.7-openjdk java-1.8-openjdk
add a comment |
You should keep it simple and use one base image.
Use openjdk7
as base image, install openjdk8 as a package.
This will overwrite openjdk7 as the default JDK while leaving it in the image.
# Example Dockerfile
FROM openjdk:7-alpine
RUN apk add --no-cache openjdk8
# Other setup...
Verify
$> java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (IcedTea 3.4.0) (Alpine 8.131.11-r2)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)
$> ls /usr/lib/jvm/
default-jvm java-1.7-openjdk java-1.8-openjdk
add a comment |
You should keep it simple and use one base image.
Use openjdk7
as base image, install openjdk8 as a package.
This will overwrite openjdk7 as the default JDK while leaving it in the image.
# Example Dockerfile
FROM openjdk:7-alpine
RUN apk add --no-cache openjdk8
# Other setup...
Verify
$> java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (IcedTea 3.4.0) (Alpine 8.131.11-r2)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)
$> ls /usr/lib/jvm/
default-jvm java-1.7-openjdk java-1.8-openjdk
You should keep it simple and use one base image.
Use openjdk7
as base image, install openjdk8 as a package.
This will overwrite openjdk7 as the default JDK while leaving it in the image.
# Example Dockerfile
FROM openjdk:7-alpine
RUN apk add --no-cache openjdk8
# Other setup...
Verify
$> java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (IcedTea 3.4.0) (Alpine 8.131.11-r2)
OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)
$> ls /usr/lib/jvm/
default-jvm java-1.7-openjdk java-1.8-openjdk
answered Nov 16 '17 at 3:09
stacksonstacksstacksonstacks
2,6321026
2,6321026
add a comment |
add a comment |
You can use Docker multistage build to achieve that. You would basically copy the java installation from one image into another image. Here is what the dockerfile might look like:
FROM openjdk:7-alpine as java7
FROM openjdk:8-alpine
COPY --from=java7 /usr/lib/jvm/java-1.7-openjdk /usr/lib/jvm/java-1.7-openjdk
Now you will have both java installations with the jdk7 installation being under /usr/lib/jvm/java-1.7-openjdk
add a comment |
You can use Docker multistage build to achieve that. You would basically copy the java installation from one image into another image. Here is what the dockerfile might look like:
FROM openjdk:7-alpine as java7
FROM openjdk:8-alpine
COPY --from=java7 /usr/lib/jvm/java-1.7-openjdk /usr/lib/jvm/java-1.7-openjdk
Now you will have both java installations with the jdk7 installation being under /usr/lib/jvm/java-1.7-openjdk
add a comment |
You can use Docker multistage build to achieve that. You would basically copy the java installation from one image into another image. Here is what the dockerfile might look like:
FROM openjdk:7-alpine as java7
FROM openjdk:8-alpine
COPY --from=java7 /usr/lib/jvm/java-1.7-openjdk /usr/lib/jvm/java-1.7-openjdk
Now you will have both java installations with the jdk7 installation being under /usr/lib/jvm/java-1.7-openjdk
You can use Docker multistage build to achieve that. You would basically copy the java installation from one image into another image. Here is what the dockerfile might look like:
FROM openjdk:7-alpine as java7
FROM openjdk:8-alpine
COPY --from=java7 /usr/lib/jvm/java-1.7-openjdk /usr/lib/jvm/java-1.7-openjdk
Now you will have both java installations with the jdk7 installation being under /usr/lib/jvm/java-1.7-openjdk
answered Nov 15 '17 at 18:44
yamenkyamenk
14k31834
14k31834
add a comment |
add a comment |
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