misc: Shell is required

Author: JDBetteridge

.github/actions/docker-build/action.yaml

@@ -25,13 +25,15 @@ runs:
   steps:
     - id: uniquetag
       name: "Generate unique CI tag"
+      shell: bash
       run: |
         UNIQUE=$(echo "${GITHUB_RUN_ID}_${GITHUB_RUN_ATTEMPT}" | cksum | cut -f 1 -d " ")
         echo "Unique ID: ${UNIQUE}"
         echo "unique=${UNIQUE}" >> "$GITHUB_OUTPUT"
 
     - id: dockerbuild
       name: "Build docker container"
+      shell: bash
       run: >
         docker build
           --pull

.github/actions/docker-clean/action.yaml

@@ -16,5 +16,6 @@ runs:
   steps:
     - id: dockerclean
       name: "Cleanup docker image"
+      shell: bash
       run: |
           docker image rm -f "${{ inputs.tag }}${{ inputs.id }}"

.github/actions/docker-run/action.yaml

@@ -32,6 +32,7 @@ runs:
   steps:
     - id: processenv
       name: Process environment variable list
+      shell: bash
       env:
         ENV_INPUT: ${{ inputs.env }}
       run: |
@@ -48,6 +49,7 @@ runs:
 
     - id: dockerrun
       name: "Run command ${{ input.command }} in ${{ input.tag }} docker container"
+      shell: bash
       run: >
         docker run
           --init -t --rm