Incorporate PGO into builds

For https://github.com/turt2live/matrix-media-repo/issues/428

.dockerignore

@@ -10,6 +10,7 @@
 /dev/conduit-db
 /dev/psql
 /vcpkg
+/libheif
 
 # Generated files
 assets.bin.go

.github/workflows/download_pgo.yml

+name: "Update PGO performance profile"
+on:
+#  schedule:
+#    - cron: "0 0 * * 2" # Every Tuesday at 00:00
+  workflow_dispatch:
+jobs:
+  update_providers:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+      - name: "Download new pgo_media_repo.pprof"
+        run: "curl -s --fail -X POST -H \"Authorization: Bearer ${PGO_MERGE}\" https://pgo-mmr.t2host.io/v1/merge?and_combine=true > pgo_media_repo.pprof"
+      - uses: stefanzweifel/git-auto-commit-action@v4
+        with:
+          commit_message: "Update pgo_media_repo.pprof"

.gitignore

@@ -10,6 +10,7 @@
 /dev/conduit-db
 /dev/psql
 /vcpkg
+/libheif
 
 # Generated files
 assets.bin.go

build-dist.sh

@@ -18,6 +18,7 @@ do
     pth="$os-$arch"
     mkdir $PWD/bin/$pth
     GOOS=$os GOARCH=$arch GOBIN=$PWD/bin go build -o $PWD/bin/$pth -a -ldflags "-X github.com/turt2live/matrix-media-repo/common/version.GitCommit=$(git rev-list -1 HEAD) -X github.com/turt2live/matrix-media-repo/common/version.Version=$(git describe --tags)" -v ./cmd/...
+    GOOS=$os GOARCH=$arch GOBIN=$PWD/bin go build -pgo=pgo_media_repo.pprof -o $PWD/bin/$pth -a -ldflags "-X github.com/turt2live/matrix-media-repo/common/version.GitCommit=$(git rev-list -1 HEAD) -X github.com/turt2live/matrix-media-repo/common/version.Version=$(git describe --tags)" -v ./cmd/media_repo
     cd $PWD/bin/$pth
     if [ "$arch" == "amd64" ]; then
       arch="x64"

build.sh

 #!/bin/sh
 
+set -ex
+
 GOBIN=$PWD/bin go install -v ./cmd/compile_assets
 $PWD/bin/compile_assets
 GOBIN=$PWD/bin go install -ldflags "-X github.com/turt2live/matrix-media-repo/common/version.GitCommit=$(git rev-list -1 HEAD) -X github.com/turt2live/matrix-media-repo/common/version.Version=$(git describe --tags)" -v ./cmd/...
+GOBIN=$PWD/bin go install -pgo=pgo_media_repo.pprof -ldflags "-X github.com/turt2live/matrix-media-repo/common/version.GitCommit=$(git rev-list -1 HEAD) -X github.com/turt2live/matrix-media-repo/common/version.Version=$(git describe --tags)" -v ./cmd/media_repo