skip brew build in linux and debian build on mac

bin/build_brew.sh

@@ -12,11 +12,18 @@ IFS=$'\n'
 
 REPO_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && cd .. && pwd )"
 
+
+CURRENT_PLAFORM="$(uname)"
+REQUIRED_PLATFORM="Darwin"
+if [[ "$CURRENT_PLAFORM" != "$REQUIRED_PLATFORM" ]]; then
+   echo "[!] Skipping the Homebrew package build on $CURRENT_PLAFORM (it can only be run on $REQUIRED_PLATFORM)."
+   exit 0
+fi
+
+
 cd "$REPO_DIR/brew_dist"
-
-
 # make sure archivebox.rb is up-to-date with the dependencies
 
-echo "[+] Building bottle"
+echo "[+] Building Homebrew bottle"
 brew install --build-bottle ./archivebox.rb
 brew bottle archivebox

bin/build_deb.sh

@@ -19,6 +19,13 @@ else
 fi
 cd "$REPO_DIR"
 
+CURRENT_PLAFORM="$(uname)"
+REQUIRED_PLATFORM="Linux"
+if [[ "$CURRENT_PLAFORM" != "$REQUIRED_PLATFORM" ]]; then
+   echo "[!] Skipping the Debian package build on $CURRENT_PLAFORM (it can only be run on $REQUIRED_PLATFORM)."
+   exit 0
+fi
+
 VERSION="$(jq -r '.version' < "$REPO_DIR/package.json")"
 DEBIAN_VERSION="1"
 PGP_KEY_ID="7D5695D3B618872647861D51C38137A7C1675988"

bin/build_docker.sh

@@ -14,6 +14,7 @@ REPO_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && cd .. && p
 VERSION="$(jq -r '.version' < "$REPO_DIR/package.json")"
 cd "$REPO_DIR"
 
+which docker > /dev/null
 
 echo "[+] Building docker image in the background..."
 docker build . -t archivebox \