Sync docker-compose.yml and update manual process accordingly

ci/docker-compose.yml

@@ -59,13 +59,22 @@ x-envoy-build-base: &envoy-build-base
   - ENVOY_HEAD_REF
   - ENVOY_OUTPUT_BASE_DIR
   - ENVOY_REPO
+  - ENVOY_REGISTRY_HASH
+  - ENVOY_REGISTRY_ALLOW_UNSAFE
   - ENVOY_BUILD_ARCH
   - ENVOY_GEN_COMPDB_OPTIONS
 
   # Publishing and artifacts
   - ENVOY_DOCKER_SAVE_IMAGE
   - ENVOY_PUBLISH_DRY_RUN
   - ENVOY_TARBALL_DIR
+  - DOCS_BUILD_RELEASE
+  - BUILD_DOCS_TAG
+  - BUILD_DOCS_SHA
+
+  # Release signing
+  - ENVOY_SIGNING_KEY_PATH
+  - ENVOY_SIGNING_PASSPHRASE_PATH
 
   - MOBILE_DOCS_CHECKOUT_DIR
   - SYSTEM_STAGEDISPLAYNAME
@@ -117,14 +126,6 @@ services:
     - ${SOURCE_DIR:-..}:/source${MOUNT_ACCESS_MODE:-}
     - ${SHARED_TMP_DIR:-/tmp/bazel-shared}:${SHARED_TMP_DIR:-/tmp/bazel-shared}${MOUNT_ACCESS_MODE:-}
 
-  envoy-build-gpg:
-    <<: *envoy-build-base
-    volumes:
-    - ${ENVOY_DOCKER_BUILD_DIR:-/tmp/envoy-docker-build}:/build
-    - ${SOURCE_DIR:-..}:/source
-    - ${ENVOY_GPG_DIR-${HOME}/.gnupg}:/build/.gnupg
-    - ${SHARED_TMP_DIR:-/tmp/bazel-shared}:${SHARED_TMP_DIR:-/tmp/bazel-shared}
-
   envoy-build-dind:
     privileged: true
     <<: *envoy-build-base

docs/root/updating_envoy_dependency.md

@@ -282,6 +282,19 @@ merge_from_envoy "tools/code_format/config.yaml"
 
 ### Step 14
 
+Sync (copy) [ci/docker-compose.yml](/ci/docker-compose.yml) from
+[Envoy's version](https://github.com/envoyproxy/envoy/blob/main/ci/docker-compose.yml) to
+update our format checker configuration. Be sure to retain our local modifications,
+all lines that are unique to Nighthawk are marked with comment `# unique`.
+
+#### Example commands
+
+```bash
+merge_from_envoy "ci/docker-compose.yml"
+```
+
+### Step 15
+
 The Python dependencies need to be updated regularly. The list of packages
 the Nighthawk codebase uses is listed in
 [tools/base/requirements.in](/tools/base/requirements.in). This file specifies
@@ -301,7 +314,7 @@ This will use the configuration from
 [tools/base/requirements.in](/tools/base/requirements.in) and update the lock
 file [tools/base/requirements.txt](/tools/base/requirements.txt).
 
-### Step 15
+### Step 16
 
 Run:
 
@@ -333,7 +346,7 @@ pins in [tools/base/requirements.in](/tools/base/requirements.in).
 If you updated the Python dependencies, update the date at the top of the
 [tools/base/requirements.in](/tools/base/requirements.in) file.
 
-### Step 16
+### Step 17
 
 If the PR ends up modifying any C++ files, execute:
 
@@ -351,7 +364,7 @@ rm -rf tools/pyformat/
 
 and retrying the format command.
 
-### Step 17
+### Step 18
 
 If Nighthawk command line flags have been changed, execute:
 
@@ -363,7 +376,7 @@ to regenerate the
 portion of our documentation that captures the CLI help output. This will
 prevent a CI failure in case any flags changed in the PR or upstream.
 
-### Step 18
+### Step 19
 
 Create a PR with a title like `Update Envoy to 9753819 (Jan 24th 2021)`,
 describe all performed changes in the PR's description ([example PR