build/bake: use query format for git context

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

.github/workflows/bake.yml

@@ -158,6 +158,7 @@ env:
   COSIGN_VERSION: "v3.0.2"
   LOCAL_EXPORT_DIR: "/tmp/buildx-output"
   MATRIX_SIZE_LIMIT: "20"
+  BUILDX_SEND_GIT_QUERY_AS_INPUT: "true"
 
 jobs:
   prepare:
@@ -254,6 +255,7 @@ jobs:
           script: |
             const os = require('os');
             const { Bake } = require('@docker/actions-toolkit/lib/buildx/bake');
+            const { Build } = require('@docker/actions-toolkit/lib/buildx/build');
             const { GitHub } = require('@docker/actions-toolkit/lib/github/github');
             const { Util } = require('@docker/actions-toolkit/lib/util');
 
@@ -300,7 +302,7 @@ jobs:
               return;
             }
 
-            const bakeSource = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}.git#${process.env.GITHUB_REF}:${inpContext}`;
+            const bakeSource = await new Build().gitContext({subdir: inpContext});
             await core.group(`Set bake source`, async () => {
               core.info(bakeSource);
             });
@@ -668,7 +670,7 @@ jobs:
             };
             const renderTemplate = value => Handlebars.compile(value, {noEscape: true})({meta});
             
-            const bakeSource = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}.git#${process.env.GITHUB_REF}:${inpContext}`;
+            const bakeSource = await new Build().gitContext({subdir: inpContext});
             await core.group(`Set source output`, async () => {
               core.info(bakeSource);
               core.setOutput('source', bakeSource);

.github/workflows/build.yml

@@ -161,6 +161,7 @@ env:
   COSIGN_VERSION: "v3.0.2"
   LOCAL_EXPORT_DIR: "/tmp/buildx-output"
   MATRIX_SIZE_LIMIT: "20"
+  BUILDX_SEND_GIT_QUERY_AS_INPUT: "true"
 
 jobs:
   prepare:
@@ -570,7 +571,7 @@ jobs:
             const renderTemplate = value => Handlebars.compile(value, {noEscape: true})({meta});
             const toMultilineInput = value => value.split(/\r?\n/).map(line => line.trim()).filter(Boolean);
 
-            const buildContext = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}.git#${process.env.GITHUB_REF}:${inpContext}`;
+            const buildContext = await new Build().gitContext({subdir: inpContext});
             core.setOutput('context', buildContext);
             
             switch (inpOutput) {