fix: disable buildkit when building docker image

.github/actions/github/action.yml

@@ -12,6 +12,9 @@ outputs:
   action_ref:
     description: 'The GitHub action repository ref'
     value: ${{ steps.action.outputs.action_ref }}
+  action_sha:
+    description: 'The GitHub action repository sha'
+    value: ${{ steps.action.outputs.action_sha }}
 runs:
   using: 'composite'
   steps:
@@ -22,8 +25,10 @@ runs:
         if [[ $ACTION_PATH == */_actions/* ]]; then
           echo "action_repository=$(echo ${ACTION_PATH#*/_actions/} | cut -d/ -f1-2)" >> $GITHUB_OUTPUT
           echo "action_ref=$(echo ${ACTION_PATH#*/_actions/} | cut -d/ -f3)" >> $GITHUB_OUTPUT
+          echo "action_sha=" >> $GITHUB_OUTPUT
         else
           echo "action_repository=$GITHUB_REPOSITORY" >> $GITHUB_OUTPUT
           echo "action_ref=$GITHUB_REF" >> $GITHUB_OUTPUT
+          echo "action_sha=$GITHUB_SHA" >> $GITHUB_OUTPUT
         fi
       shell: bash

CHANGELOG.md

@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## [1.1.6] - 2023-08-04
+### Added
+- Expose action_sha from the github action when running directly from the checkout
+
+### Fixed
+- Explicitly disable buildkit when building the docker image to allow referencing merge commits by SHA
+
 ## [1.1.5] - 2023-08-04
 ### Fixed
 - Return ref instead of sha when running .github/actions/github action directly from the checkout

action.yml

@@ -61,6 +61,7 @@ runs:
         DOCKERFILE: ${{ inputs.dockerfile }}
         GITHUB_SERVER_URL: ${{ inputs.github-server-url }}
         DOCKER_REGISTRY_URL: ${{ inputs.docker-registry-url }}
+        DOCKER_BUILDKIT: '0' # Using remote git context with buildkit does not support referencing merge commits via SHA
       run: docker build -t ${DOCKER_REGISTRY_URL#http*://}/$IMAGE:$TAG -f $DOCKERFILE $GITHUB_SERVER_URL/$REPOSITORY.git#$REF
       shell: bash
     - id: run