Drop -static on Alpine build.

Fixes this error:

```console
[155/155] Linking CXX executable vcpkg
/usr/lib/gcc/x86_64-alpine-linux-musl/11.2.1/../../../../x86_64-alpine-linux-musl/bin/ld: attempted static link of dynamic object `/usr/lib/libcurl.so'
collect2: error: ld returned 1 exit status
ninja: job failed: : && /usr/bin/c++ -static -s -static-libgcc -static-libstdc++ -Wall -Wextra -Wpedantic -Wno-unknown-pragmas -Wno-missing-field-initializers -Wno-redundant-move -Wmissing-declarations -Werror -O3 -DNDEBUG  CMakeFiles/vcpkglib.dir/src/vcpkg/base/checks.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/chrono.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/cmd-parser.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/cofffilereader.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/curl.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/diagnostics.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/downloads.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/files.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/git.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/hash.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/json.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/message_sinks.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/messages.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/parse.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/strings.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/stringview.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/system.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/system.deviceid.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/system.mac.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/system.process.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/system.proxy.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/uint128.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/unicode.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/uuid.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/base/xmlserializer.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/archives.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/binarycaching.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/binaryparagraph.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/buildenvironment.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/bundlesettings.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/cgroup-parser.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/ci-baseline.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/ci-feature-baseline.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/cmakevars.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.acquire-project.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.acquire.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.activate.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.add-version.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.add.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.autocomplete.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.bootstrap-standalone.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.build-external.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.build.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.check-support.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.ci-clean.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.ci-verify-versions.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.ci.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.contact.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.create.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.deactivate.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.depend-info.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.download.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.edit.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.env.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.export.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.fetch.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.find.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.format-feature-baseline.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.format-manifest.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.generate-msbuild-props.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.hash.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.help.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.init-registry.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.install.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.integrate.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.license-report.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.list.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.new.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.owns.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.package-info.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.portsdiff.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.regenerate.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.remove.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.search.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.set-installed.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.test-features.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.update-baseline.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.update-registry.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.update.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.upgrade.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.use.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.version.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.vsinstances.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-applocal.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-ce.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-changelog.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-check-tools-sha.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-extract.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-generate-message-map.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-preregister-telemetry.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-print-config.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/commands.z-upload-metrics.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/configuration.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/configure-environment.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/dependencies.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/input.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/metrics.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/packagespec.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/paragraphs.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/platform-expression.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/portfileprovider.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/postbuildlint.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/registries.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/sourceparagraph.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/spdx.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/statusparagraph.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/statusparagraphs.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/tools.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/triplet.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/vcpkgcmdarguments.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/vcpkglib.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/vcpkgpaths.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/versiondeserializers.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/versions.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/visualstudio.cpp.o CMakeFiles/vcpkglib.dir/src/vcpkg/xunitwriter.cpp.o CMakeFiles/vcpkg.dir/src/vcpkg.cpp.o -o vcpkg  -ldl  /usr/lib/libcurl.so  _deps/fmt-build/libfmt.a  liblocale-resources.a && :
```

Author: BillyONeal

azure-pipelines/signing.yml

@@ -263,7 +263,7 @@ extends:
             inlineScript: |
               az acr login --name vcpkgpmeofficialbuilders --resource-group vcpkg-tool-official-builds --subscription c0f11a1f-38f5-4908-8698-1aa5df75baf3
               mkdir -p "$(Agent.TempDirectory)/build"
-              docker run --rm --mount "type=bind,source=$(Build.Repository.LocalPath),target=/source,readonly" --mount "type=bind,source=$(Agent.TempDirectory)/build,target=/build" vcpkgpmeofficialbuilders-c7ajd0chdtfugffn.azurecr.io/vcpkg/vcpkg-build-alpine:3.16.1 sh -c "cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DVCPKG_DEVELOPMENT_WARNINGS=ON -DVCPKG_WARNINGS_AS_ERRORS=ON -DVCPKG_BUILD_FUZZING=OFF -DVCPKG_EMBED_GIT_SHA=ON -DVCPKG_OFFICIAL_BUILD=ON -DCMAKE_CXX_FLAGS=\"-static -s -static-libgcc -static-libstdc++\" -DVCPKG_CMAKERC_URL=$(cmakerc-tarball-url) -DVCPKG_FMT_URL=$(fmt-tarball-url) -DVCPKG_CURL_URL=$(curl-tarball-url) -DVCPKG_STANDALONE_BUNDLE_SHA=$(VCPKG_STANDALONE_BUNDLE_SHA) -DVCPKG_ARTIFACTS_SHA=$(VCPKG_ARTIFACTS_SHA) -DVCPKG_BASE_VERSION=$(VCPKG_BASE_VERSION) -DVCPKG_VERSION=$(Build.SourceVersion) -S /source -B /build 2>&1 && ninja -C /build"
+              docker run --rm --mount "type=bind,source=$(Build.Repository.LocalPath),target=/source,readonly" --mount "type=bind,source=$(Agent.TempDirectory)/build,target=/build" vcpkgpmeofficialbuilders-c7ajd0chdtfugffn.azurecr.io/vcpkg/vcpkg-build-alpine:3.16.1 sh -c "cmake -G Ninja -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DVCPKG_DEVELOPMENT_WARNINGS=ON -DVCPKG_WARNINGS_AS_ERRORS=ON -DVCPKG_BUILD_FUZZING=OFF -DVCPKG_EMBED_GIT_SHA=ON -DVCPKG_OFFICIAL_BUILD=ON -DCMAKE_CXX_FLAGS=\"-s -static-libgcc -static-libstdc++\" -DVCPKG_CMAKERC_URL=$(cmakerc-tarball-url) -DVCPKG_FMT_URL=$(fmt-tarball-url) -DVCPKG_CURL_URL=$(curl-tarball-url) -DVCPKG_STANDALONE_BUNDLE_SHA=$(VCPKG_STANDALONE_BUNDLE_SHA) -DVCPKG_ARTIFACTS_SHA=$(VCPKG_ARTIFACTS_SHA) -DVCPKG_BASE_VERSION=$(VCPKG_BASE_VERSION) -DVCPKG_VERSION=$(Build.SourceVersion) -S /source -B /build 2>&1 && ninja -C /build"
               mv "$(Agent.TempDirectory)/build/vcpkg" "$(Build.ArtifactStagingDirectory)/vcpkg-muslc"
       - job: glibc_arm64_build
         displayName: 'glibc Arm64 Build'