Get rid of custom docker images in favor of pre-build hook

.github/workflows/release.yml

@@ -68,7 +68,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        build: [linux, linux-arm]
+        build: [linux, linux-arm, freebsd]
         include:
           - build: linux
             os: self-hosted
@@ -78,6 +78,10 @@ jobs:
             os: self-hosted
             asset_name: defguard-gateway-linux-armv7
             target: armv7-unknown-linux-gnueabihf
+          - build: freebsd
+            os: self-hosted
+            asset_name: defguard-gateway-freebsd-x86_64
+            target: x86_64-unknown-freebsd
     steps:
       # Store the version, stripping any v-prefix
       - name: Write release version
@@ -172,14 +176,14 @@ jobs:
           asset_content_type: application/octet-stream
 
       - name: Build freebsd package
-        if: matrix.build == 'linux'
+        if: matrix.build == 'freebsd'
         uses: bpicode/github-action-fpm@master
         with:
           fpm_args: "${{ matrix.asset_name }}-${{ github.ref_name }}=/usr/sbin/defguard-gateway defguard-gateway.service=/usr/lib/systemd/system/defguard-gateway.service example-config.toml=/etc/defguard/gateway.toml"
           fpm_opts: "--debug -t freebsd --version=${{ env.VERSION }} -p defguard-gateway_${{ env.VERSION }}_${{ matrix.target }}.txz"
 
       - name: Upload freebsd
-        if: matrix.build == 'linux'
+        if: matrix.build == 'freebsd'
         uses: actions/[email protected]
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Cross.toml

@@ -1,8 +1,14 @@
 [target.x86_64-unknown-linux-gnu]
-image = "ghcr.io/defguard/cross:x86_64-unknown-linux-gnu"
+pre-build = ["apt-get update && apt-get install --assume-yes unzip ",
+"PB_REL='https://github.com/protocolbuffers/protobuf/releases'", 
+"PB_VERSION='3.20.0' && curl -LO $PB_REL/download/v$PB_VERSION/protoc-$PB_VERSION-linux-x86_64.zip",
+"unzip protoc-$PB_VERSION-linux-x86_64.zip bin/protoc include/google/* -d /usr"]
 
 [target.armv7-unknown-linux-gnueabihf]
-image = "ghcr.io/defguard/cross:armv7-unknown-linux-gnueabihf"
+pre-build = ["apt-get update && apt-get install --assume-yes unzip ",
+"PB_REL='https://github.com/protocolbuffers/protobuf/releases'", 
+"PB_VERSION='3.20.0' && curl -LO $PB_REL/download/v$PB_VERSION/protoc-$PB_VERSION-linux-x86_64.zip",
+"unzip protoc-$PB_VERSION-linux-x86_64.zip bin/protoc include/google/* -d /usr"]
 
 [target.x86_64-unknown-freebsd]
 pre-build = ["apt-get update && apt-get install --assume-yes unzip ",