chore: install packer since we're experimenting with a base image

Author: darora

.github/workflows/qemu-image-build.yml

@@ -67,6 +67,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y qemu-efi-aarch64 cloud-image-utils qemu-system-arm qemu-utils
+          cd && curl -L "https://releases.hashicorp.com/packer/1.7.8/packer_1.7.8_linux_$(dpkg --print-architecture).zip" -o packer.zip && unzip packer.zip  && rm -f packer.zip  && sudo mv packer /usr/local/bin/
 
       - name: Set PostgreSQL version environment variable
         run: echo "POSTGRES_MAJOR_VERSION=${{ matrix.postgres_version }}" >> $GITHUB_ENV
@@ -85,7 +86,6 @@ jobs:
         run: |
           make init
           GIT_SHA=${{github.sha}}
-          # TODO (darora): possibly need to install qemu deps here
           export PACKER_LOG=1
           packer build -var "git_sha=$(UPSTREAM_NIX_GIT_SHA)" -var-file="common-nix.vars.pkr.hcl" qemu-arm64-nix.pkr.hcl
           # packer build -var "git-head-version=${GIT_SHA}" -var "packer-execution-id=${GITHUB_RUN_ID}"  -var-file="development-arm.vars.pkr.hcl" -var-file="common-nix.vars.pkr.hcl" -var "ansible_arguments=-e postgresql_major=${POSTGRES_MAJOR_VERSION}"  amazon-arm64-nix.pkr.hcl