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refactor: use a Dockerfile to speed up env var injection for herokuish app builds

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Herokuish app builds currently spin up a temporary container and then commit that container. The new approach uses a Dockerfile to perform those same actions, avoiding the need for the temporary container.
This commit is contained in:
Jose Diaz-Gonzalez
2021-08-18 03:16:11 -04:00
parent d0219ced67
commit 3d4252f43c
4 changed files with 31 additions and 37 deletions
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29
plugins/builder-herokuish/builder-release
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@@ -15,32 +15,21 @@ trigger-builder-herokuish-builder-release() {
local CID
local IMAGE=$(get_app_image_name "$APP" "$IMAGE_TAG")
local DOCKER_COMMIT_LABEL_ARGS=("--change" "LABEL org.label-schema.schema-version=1.0" "--change" "LABEL org.label-schema.vendor=dokku" "--change" "LABEL com.dokku.app-name=$APP")
local DOCKER_RUN_LABEL_ARGS="--label=com.dokku.app-name=$APP"
local DOCKER_BUILD_LABEL_ARGS="--label=org.label-schema.schema-version=1.0 --label=org.label-schema.vendor=dokku --label=com.dokku.app-name=$APP --label=com.dokku.image-stage=release --label=dokku"
plugn trigger pre-release-buildpack "$APP" "$IMAGE_TAG"
if [[ -n $(config_export global) ]]; then
CID=$(config_export global | "$DOCKER_BIN" container run "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS -i -a stdin "$IMAGE" /bin/bash -c "mkdir -p /app/.profile.d && cat > /app/.profile.d/00-global-env.sh")
if test "$("$DOCKER_BIN" container wait "$CID")" -ne 0; then
dokku_log_warn "Failure injecting global environment variables"
return 1
fi
"$DOCKER_BIN" container commit "${DOCKER_COMMIT_LABEL_ARGS[@]}" "$CID" "$IMAGE" >/dev/null
plugn trigger scheduler-register-retired "$APP" "$CID"
fi
if [[ -n $(config_export app "$APP") ]]; then
CID=$(config_export app "$APP" | "$DOCKER_BIN" container run "${DOCKER_RUN_LABEL_ARGS[@]}" $DOKKU_GLOBAL_RUN_ARGS -i -a stdin "$IMAGE" /bin/bash -c "mkdir -p /app/.profile.d && cat > /app/.profile.d/01-app-env.sh")
if test "$("$DOCKER_BIN" container wait "$CID")" -ne 0; then
dokku_log_warn "Failure injecting app environment variables"
return 1
fi
TMP_WORK_DIR="$(mktemp -d "/tmp/dokku-${DOKKU_PID}-${FUNCNAME[0]}.XXXXXX")"
trap "rm -rf '$TMP_WORK_DIR' >/dev/null" RETURN INT TERM EXIT
"$DOCKER_BIN" container commit "${DOCKER_COMMIT_LABEL_ARGS[@]}" "$CID" "$IMAGE" >/dev/null
plugn trigger scheduler-register-retired "$APP" "$CID"
config_export global>"$TMP_WORK_DIR/00-global-env.sh"
config_export app "$APP">"$TMP_WORK_DIR/01-app-env.sh"
if ! suppress_output "$DOCKER_BIN" image build "${DOCKER_BUILD_LABEL_ARGS[@]}" $DOKKU_GLOBAL_BUILD_ARGS -f "$PLUGIN_AVAILABLE_PATH/builder-herokuish/dockerfiles/builder-release.Dockerfile" --build-arg APP_IMAGE="$IMAGE" -t $IMAGE "$TMP_WORK_DIR"; then
dokku_log_warn "Failure injecting environment variables"
return 1
fi
docker-image-labeler --label=com.dokku.image-stage=release --label=com.dokku.app-name=$APP --label=org.label-schema.schema-version=1.0 --label=org.label-schema.vendor=dokku --label=dokku "$IMAGE"
plugn trigger post-release-buildpack "$APP" "$IMAGE_TAG"
plugn trigger post-release-builder "$BUILDER_TYPE" "$APP" "$IMAGE"
}