5043e1d4a1
Init container that fetches the deployable JAR from a signed URL into the shared /app/jars/ volume before the main runtime container starts. Pairs with the controller (Task 7) and DockerRuntimeOrchestrator (Task 10). - Dockerfile: busybox:1.37-musl, non-root USER (UID 1000) - entrypoint.sh: POSIX sh, set -eu, required env vars (ARTIFACT_URL, ARTIFACT_EXPECTED_SIZE), wget with retries/timeout, size verification - README: build instructions and runtime contract Smoke-tested locally (docker build + happy-path fetch + size-mismatch). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
26 lines
921 B
Bash
26 lines
921 B
Bash
#!/bin/sh
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# cameleer-runtime-loader: fetches one JAR from a signed URL into the shared
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# /app/jars/ volume, verifies size, exits. Runs in the same hardened sandbox as
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# the main container (cap_drop ALL, read-only rootfs, etc.) — only /app/jars/
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# is writeable.
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set -eu
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: "${ARTIFACT_URL:?ARTIFACT_URL is required}"
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: "${ARTIFACT_EXPECTED_SIZE:?ARTIFACT_EXPECTED_SIZE is required}"
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OUT=/app/jars/app.jar
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mkdir -p /app/jars
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echo "loader: fetching artifact (expected $ARTIFACT_EXPECTED_SIZE bytes)"
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# -q quiet, -O output, --tries=3 retry transient network blips,
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# --timeout=30 cap stalls. wget exits non-zero on HTTP >=400.
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wget -q --tries=3 --timeout=30 -O "$OUT" "$ARTIFACT_URL"
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actual=$(wc -c < "$OUT")
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if [ "$actual" -ne "$ARTIFACT_EXPECTED_SIZE" ]; then
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echo "loader: size mismatch — expected $ARTIFACT_EXPECTED_SIZE, got $actual" >&2
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exit 2
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fi
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echo "loader: artifact written to $OUT ($actual bytes)"
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