Using SSM session provisioner does not work, because SSM session manager is not installed in the Docker container

[dginther]

Using Ubuntu 20.04 on Github Actions.
In the 'builders':

"builders": [
  ...
  "ssh_username": "ubuntu",
  "ssh_interface": "session_manager",
  "communicator": "ssh",
...
]

Current Behavior

==> amazon-ebs: exec: "session-manager-plugin": executable file not found in $PATH

Steps to Reproduce

Try to use a builder config that uses session_manager

"builders": [
  ...
  "ssh_username": "ubuntu",
  "ssh_interface": "session_manager",
  "communicator": "ssh",
...
]

Environment

1.) Link to a Gist of your Workflow configuration:

2.) Any other relevant environment information:

[james-green-affinity]

After hours of searching I give you a solution that works for me:
aws/session-manager-plugin#12 (comment)

FROM golang:1.15.3-alpine as ssm-builder

ARG VERSION=1.2.279.0

RUN set -ex && apk add --no-cache make git gcc libc-dev curl bash zip && \
    curl -sLO https://github.com/aws/session-manager-plugin/archive/${VERSION}.tar.gz && \
    mkdir -p /go/src/github.com && \
    tar xzf ${VERSION}.tar.gz && \
    mv session-manager-plugin-${VERSION} /go/src/github.com/session-manager-plugin && \
    cd /go/src/github.com/session-manager-plugin && \
    make release

# see https://hub.docker.com/r/hashicorp/packer/tags for all available tags
FROM hashicorp/packer:light@sha256:f795aace438ef92e738228c21d5ceb7d5dd73ceb7e0b1efab5b0e90cbc4d4dcd

COPY --from=ssm-builder /go/src/github.com/session-manager-plugin/bin/linux_amd64_plugin/session-manager-plugin /usr/local/bin/

RUN apk add ansible=2.10.7-r0

COPY "entrypoint.sh" "/entrypoint.sh"

ENTRYPOINT ["/entrypoint.sh"]

[ksatirli]

Thank you for sharing this @james-green-affinity - this is helpful!

At this point, we're not looking to expand the upstream Packer image to include ancillary tooling, so I'll go ahead and close this issue.