feat: base versions on Dockerfile

Signed-off-by: Lincoln Wallace <lincoln.wallace@canonical.com>

snap/snapcraft.yaml

@@ -191,7 +191,7 @@ parts:
       install -T bundles/dynbinary-daemon/dockerd "$CRAFT_PART_INSTALL/bin/dockerd"
       # install docker-proxy previously provided by libnetwork part
       install -T bundles/dynbinary-daemon/docker-proxy "$CRAFT_PART_INSTALL/bin/docker-proxy"
-    # https://github.com/moby/moby/blob/v27.2.0/Dockerfile.simple (Docker-supported Go version for Engine)
+    # https://github.com/moby/moby/blob/v27.2.0/Dockerfile#L3 (Docker-supported Go version for Engine)
     build-snaps: &go ['go/1.21/stable']
     # we get weird behavior if we mix/match Go versions throughout this one snapcraft.yml, so we use a YAML reference here to ensure we're always consistent throughout
     after: [wrapper-scripts]
@@ -215,7 +215,7 @@ parts:
   containerd:
     plugin: make
     source: https://github.com/containerd/containerd.git
-    # from https://github.com/moby/moby/releases/tag/v27.2.0
+    # from https://github.com/moby/moby/blob/v27.2.0/Dockerfile#L199
     source-tag: v1.7.21
     source-depth: 1
     override-build: |
@@ -232,7 +232,7 @@ parts:
   runc:
     plugin: make
     source: https://github.com/opencontainers/runc.git
-    # from https://github.com/moby/moby/releases/tag/v27.0.0-rc.2
+    # from https://github.com/moby/moby/blob/v27.2.0/Dockerfile#L290
     source-tag: v1.1.13
     source-depth: 1
     override-build: |
@@ -295,7 +295,7 @@ parts:
     plugin: cmake
     source: https://github.com/krallin/tini.git
     source-type: git
-    # from https://github.com/moby/moby/blob/v27.2.0/hack/dockerfile/install/tini.installer
+    # from https://github.com/moby/moby/blob/v27.2.0/Dockerfile#L325
     source-tag: v0.19.0
     source-depth: 1
     organize: