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1

1

I have a project with DockerHub autobuilds running for each branch of the project. These builds are running nicely.

I would like to extend this autobuild configuration to build images for selected pull requests for these branches.

The following documentation indicates that a variable named DOCKER_TAG should be available in a DockerHub autobuild.

https://docs.docker.com/docker-hub/builds/advanced/#environment-variables-for-building-and-testing

I want to configure my auto build in the following manner.

If I attempt to build a tag named "pr1234" then my build will overlay the code from PR #1234 before running the build.

# Assign the env variable DOCKER_TAG to an arg of the same name
ARG DOCKER_TAG=$DOCKER_TAG

...

# if DOCKER_TAG is in the format prNNNN then merge code for that PR on top of the current branch
RUN PRNUM=`echo $DOCKER_TAG| egrep "^pr([0-9]+)$" | sed -e s/pr//` && 
 if [ -n "$PRNUM" ]; 
 then echo "Merging $PRNUM"; 
 curl -o /tmp/pr.patch -L https://github.com/DSpace/DSpace/pull/$PRNUM.diff; 
 git apply /tmp/pr.patch; 
 fi

If I run my build locally, I am able to set this variable and my docker build runs as I would like.

docker build -t dspace/dspace:pr1234 -f Dockerfile.jdk8-test --build-arg DOCKER_TAG=pr1234 .

When I attempt to run this from Dockerhub, the DOCKER_TAG variable appears to be blank, so I presume that DOCKER_TAG is not being set as I expected.

Can you suggest a way to access this variable or to accomplish an automated build for selected PR's?

docker dockerhub

share|improve this question

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

add a comment | 

1

1

I have a project with DockerHub autobuilds running for each branch of the project. These builds are running nicely.

I would like to extend this autobuild configuration to build images for selected pull requests for these branches.

The following documentation indicates that a variable named DOCKER_TAG should be available in a DockerHub autobuild.

https://docs.docker.com/docker-hub/builds/advanced/#environment-variables-for-building-and-testing

I want to configure my auto build in the following manner.

If I attempt to build a tag named "pr1234" then my build will overlay the code from PR #1234 before running the build.

# Assign the env variable DOCKER_TAG to an arg of the same name
ARG DOCKER_TAG=$DOCKER_TAG

...

# if DOCKER_TAG is in the format prNNNN then merge code for that PR on top of the current branch
RUN PRNUM=`echo $DOCKER_TAG| egrep "^pr([0-9]+)$" | sed -e s/pr//` && 
 if [ -n "$PRNUM" ]; 
 then echo "Merging $PRNUM"; 
 curl -o /tmp/pr.patch -L https://github.com/DSpace/DSpace/pull/$PRNUM.diff; 
 git apply /tmp/pr.patch; 
 fi

If I run my build locally, I am able to set this variable and my docker build runs as I would like.

docker build -t dspace/dspace:pr1234 -f Dockerfile.jdk8-test --build-arg DOCKER_TAG=pr1234 .

When I attempt to run this from Dockerhub, the DOCKER_TAG variable appears to be blank, so I presume that DOCKER_TAG is not being set as I expected.

Can you suggest a way to access this variable or to accomplish an automated build for selected PR's?

docker dockerhub

share|improve this question

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

add a comment | 

I have a project with DockerHub autobuilds running for each branch of the project. These builds are running nicely.

I would like to extend this autobuild configuration to build images for selected pull requests for these branches.

The following documentation indicates that a variable named DOCKER_TAG should be available in a DockerHub autobuild.

https://docs.docker.com/docker-hub/builds/advanced/#environment-variables-for-building-and-testing

I want to configure my auto build in the following manner.

If I attempt to build a tag named "pr1234" then my build will overlay the code from PR #1234 before running the build.

# Assign the env variable DOCKER_TAG to an arg of the same name
ARG DOCKER_TAG=$DOCKER_TAG

...

# if DOCKER_TAG is in the format prNNNN then merge code for that PR on top of the current branch
RUN PRNUM=`echo $DOCKER_TAG| egrep "^pr([0-9]+)$" | sed -e s/pr//` && 
 if [ -n "$PRNUM" ]; 
 then echo "Merging $PRNUM"; 
 curl -o /tmp/pr.patch -L https://github.com/DSpace/DSpace/pull/$PRNUM.diff; 
 git apply /tmp/pr.patch; 
 fi

If I run my build locally, I am able to set this variable and my docker build runs as I would like.

docker build -t dspace/dspace:pr1234 -f Dockerfile.jdk8-test --build-arg DOCKER_TAG=pr1234 .

When I attempt to run this from Dockerhub, the DOCKER_TAG variable appears to be blank, so I presume that DOCKER_TAG is not being set as I expected.

Can you suggest a way to access this variable or to accomplish an automated build for selected PR's?

docker dockerhub

share|improve this question

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

# Assign the env variable DOCKER_TAG to an arg of the same name
ARG DOCKER_TAG=$DOCKER_TAG

...

# if DOCKER_TAG is in the format prNNNN then merge code for that PR on top of the current branch
RUN PRNUM=`echo $DOCKER_TAG| egrep "^pr([0-9]+)$" | sed -e s/pr//` && 
 if [ -n "$PRNUM" ]; 
 then echo "Merging $PRNUM"; 
 curl -o /tmp/pr.patch -L https://github.com/DSpace/DSpace/pull/$PRNUM.diff; 
 git apply /tmp/pr.patch; 
 fi

docker build -t dspace/dspace:pr1234 -f Dockerfile.jdk8-test --build-arg DOCKER_TAG=pr1234 .

share|improve this question

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

share|improve this question

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

asked Mar 25 at 23:18

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

1 Answer
1

active

oldest

votes

2

I found a solution that seems to work. I created a build hook named hooks/build and pass the variable explicitly.

#!/bin/bash
docker build --build-arg DOCKER_TAG=$DOCKER_TAG -f $DOCKERFILE_PATH -t $IMAGE_NAME .

See https://docs.docker.com/docker-hub/builds/advanced/#custom-build-phase-hooks

share|improve this answer

edited Mar 26 at 14:19

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer. That helps me out the issue.
  
  – Bowen
  May 11 at 10:39
  

  
  
  
  

add a comment | 

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2

I found a solution that seems to work. I created a build hook named hooks/build and pass the variable explicitly.

#!/bin/bash
docker build --build-arg DOCKER_TAG=$DOCKER_TAG -f $DOCKERFILE_PATH -t $IMAGE_NAME .

See https://docs.docker.com/docker-hub/builds/advanced/#custom-build-phase-hooks

share|improve this answer

edited Mar 26 at 14:19

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer. That helps me out the issue.
  
  – Bowen
  May 11 at 10:39
  

  
  
  
  

add a comment | 

2

I found a solution that seems to work. I created a build hook named hooks/build and pass the variable explicitly.

#!/bin/bash
docker build --build-arg DOCKER_TAG=$DOCKER_TAG -f $DOCKERFILE_PATH -t $IMAGE_NAME .

See https://docs.docker.com/docker-hub/builds/advanced/#custom-build-phase-hooks

share|improve this answer

edited Mar 26 at 14:19

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer. That helps me out the issue.
  
  – Bowen
  May 11 at 10:39
  

  
  
  
  

add a comment | 

I found a solution that seems to work. I created a build hook named hooks/build and pass the variable explicitly.

#!/bin/bash
docker build --build-arg DOCKER_TAG=$DOCKER_TAG -f $DOCKERFILE_PATH -t $IMAGE_NAME .

See https://docs.docker.com/docker-hub/builds/advanced/#custom-build-phase-hooks

share|improve this answer

edited Mar 26 at 14:19

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

#!/bin/bash
docker build --build-arg DOCKER_TAG=$DOCKER_TAG -f $DOCKERFILE_PATH -t $IMAGE_NAME .

share|improve this answer

edited Mar 26 at 14:19

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges

answered Mar 26 at 4:38

terrywbterrywb

2,61511 gold badge1010 silver badges3030 bronze badges