Publish snapshot tag as an output for later use

elgohr · Sep 27, 2019 · a5b5841 · a5b5841
1 parent 1b9fb05
commit a5b5841
Show file tree

Hide file tree

Showing 3 changed files with 15 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -33,6 +33,10 @@ jobs:
 
 > If you would like to publish the image to AWS ECR, please have a look at https://github.com/elgohr/ecr-login-action
 
+## Outputs
+
+`snapshot-tag` is the tag that is generated by the `snapshot`-option
+
 ## Optional Arguments
 
 ### registry

diff --git a/entrypoint.sh b/entrypoint.sh
@@ -55,12 +55,14 @@ if [ ! -z "${INPUT_CACHE}" ]; then
 fi
 
 if [ "${INPUT_SNAPSHOT}" = "true" ]; then
-  timestamp=`date +%Y%m%d%H%M%S`
-  shortSha=$(echo "${GITHUB_SHA}" | cut -c1-6)
-  SHA_DOCKER_NAME="${INPUT_NAME}:${timestamp}${shortSha}"
+  TIMESTAMP=`date +%Y%m%d%H%M%S`
+  SHORT_SHA=$(echo "${GITHUB_SHA}" | cut -c1-6)
+  SNAPSHOT_TAG="${TIMESTAMP}${SHORT_SHA}"
+  SHA_DOCKER_NAME="${INPUT_NAME}:${SNAPSHOT_TAG}"
   docker build $BUILDPARAMS -t ${DOCKERNAME} -t ${SHA_DOCKER_NAME} .
   docker push ${DOCKERNAME}
   docker push ${SHA_DOCKER_NAME}
+  echo ::set-output name=snapshot-tag::"${SNAPSHOT_TAG}"
 else
   docker build $BUILDPARAMS -t ${DOCKERNAME} .
   docker push ${DOCKERNAME}

diff --git a/test.bats b/test.bats
@@ -82,7 +82,7 @@ Called /usr/local/bin/docker logout"
   [ "$output" = "$expected" ]
 }
 
-@test "it pushes branch by sha and date in addition" {
+@test "it pushes a snapshot by sha and date in addition" {
   export INPUT_SNAPSHOT='true'
   export GITHUB_SHA='12169ed809255604e557a82617264e9c373faca7'
   export MOCK_DATE='197001010101'
@@ -93,6 +93,7 @@ Called /usr/local/bin/docker logout"
 Called /usr/local/bin/docker build -t my/repository:latest -t my/repository:19700101010112169e .
 Called /usr/local/bin/docker push my/repository:latest
 Called /usr/local/bin/docker push my/repository:19700101010112169e
+::set-output name=snapshot-tag::19700101010112169e
 Called /usr/local/bin/docker logout"
   echo $output
   [ "$output" = "$expected" ]
@@ -111,6 +112,7 @@ Called /usr/local/bin/docker pull my/repository:latest
 Called /usr/local/bin/docker build --cache-from my/repository:latest -t my/repository:latest -t my/repository:19700101010112169e .
 Called /usr/local/bin/docker push my/repository:latest
 Called /usr/local/bin/docker push my/repository:19700101010112169e
+::set-output name=snapshot-tag::19700101010112169e
 Called /usr/local/bin/docker logout"
   echo $output
   [ "$output" = "$expected" ]
@@ -130,6 +132,7 @@ Called /usr/local/bin/docker pull my/repository:latest
 Called /usr/local/bin/docker build -t my/repository:latest -t my/repository:19700101010112169e .
 Called /usr/local/bin/docker push my/repository:latest
 Called /usr/local/bin/docker push my/repository:19700101010112169e
+::set-output name=snapshot-tag::19700101010112169e
 Called /usr/local/bin/docker logout"
   echo $output
   [ "$output" = "$expected" ]
@@ -147,6 +150,7 @@ Called /usr/local/bin/docker logout"
 Called /usr/local/bin/docker build -f MyDockerFileName -t my/repository:latest -t my/repository:19700101010112169e .
 Called /usr/local/bin/docker push my/repository:latest
 Called /usr/local/bin/docker push my/repository:19700101010112169e
+::set-output name=snapshot-tag::19700101010112169e
 Called /usr/local/bin/docker logout"
   echo $output
   [ "$output" = "$expected" ]
@@ -166,6 +170,7 @@ Called /usr/local/bin/docker pull my/repository:latest
 Called /usr/local/bin/docker build -f MyDockerFileName --cache-from my/repository:latest -t my/repository:latest -t my/repository:19700101010112169e .
 Called /usr/local/bin/docker push my/repository:latest
 Called /usr/local/bin/docker push my/repository:19700101010112169e
+::set-output name=snapshot-tag::19700101010112169e
 Called /usr/local/bin/docker logout"
   echo $output
   [ "$output" = "$expected" ]