Feature/add dockerfile

Dockerfile

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+# Only use semver version tags. Don't specify distro!
+FROM node:16.2.0-stretch
+
+RUN curl --silent -o /usr/local/bin/node-prune https://s3.amazonaws.com/ssi-us-east-1-pkg/node-prune/node-prune-0.1 && \
+    chmod +x /usr/local/bin/node-prune && \
+    rm -rf /tmp/* && \
+    groupadd ssi -r && \
+    useradd -r -g ssi ssi
+
+CMD ["echo", "Hello World from node"]

buildkite.yml

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+steps:
+  - commands: 
+    - "echo 'Hello World'"
+    - "docker build . -t test-image"
+    - "docker run test-image"
+    plugins: 
+    - docker#v3.8.0:
+        image: "676020893150.dkr.ecr.us-east-1.amazonaws.com/docker"
+        always-pull: true
+        volumes:
+            - "/var/run/docker.sock:/var/run/docker.sock"
+    label: "test"
+  - wait
+  - command: ./generate-pipelines.sh
+

generate-pipelines.sh

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+#!/bin/bash
+set -euo pipefail
+
+envs_file='envs.yml'
+workspaces_file='workspaces.json'
+
+rm -rf "$envs_file"
+jsonnet pipelines.jsonnet | yq eval -P - > "$envs_file"
+
+envs=$(jq -r '.workspaces[]' "$workspaces_file")
+
+for e in ${envs[@]}; do
+  yq eval ".$e" "$envs_file" | buildkite-agent pipeline upload
+done
+

pipelines.jsonnet

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+local workspaces = (import 'workspaces.json').workspaces;
+
+local plan_job(script, ws) = {
+  command: script + ws,
+  key: 'plan-' + ws,
+  label: 'plan-' + ws,
+};
+
+local apply_job(script, ws) = {
+  command: [script + ws],
+  depends_on: ['plan-' + ws],
+};
+
+local pipeline(ws) = {
+  [ws]: {
+    steps: [
+      plan_job('echo terraform plan-', ws),
+      // { block: 'apply-' + ws },
+      apply_job('echo terraform apply-', ws),
+    ],
+  },
+};
+
+local generate_pipelines(pipelines) =
+  local append(arr, i, res) =
+    if i >= std.length(arr) then
+      res
+    else
+      append(arr, i + 1, res + arr[i]) tailstrict;
+  append(pipelines, 0, {});
+
+{} + generate_pipelines([pipeline(ws) for ws in workspaces])

workspaces.json

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+{
+  "workspaces": ["prod", "dev", "stg"]
+}