make sure it installs on arm32v7

root/etc/cont-init.d/98-mediadc-dependency-install

@@ -1,33 +1,42 @@
 #!/usr/bin/with-contenv bash
 
-echo "**** Installing required packages ****"
+ALPINE_VER=$(cat /etc/apk/repositories | grep main | sed 's|.*alpine/v||' | sed 's|/main.*||')
+if [ "${ALPINE_VER}" = "3.14" ]; then
+    PIP_ARGS="-f https://wheel-index.linuxserver.io/alpine/"
+else
+    PIP_ARGS="-f https://wheel-index.linuxserver.io/alpine-${ALPINE_VER}/"
+fi
 
+echo "**** Installing required packages ****"
 apk add --no-cache \
     ffmpeg \
     imagemagick \
     supervisor \
     py3-numpy \
     py3-pillow \
-    py3-asn1crypto;
+    py3-asn1crypto
 
 echo "**** Installing optional packages ****"
-
 apk add --no-cache \
     py3-cffi \
     py3-scipy \
     py3-pynacl \
     py3-cryptography \
-    py3-pip;
+    py3-pip
 
+if [ $(arch) = "armv7l" ]; then
+    echo "**** Installing build deps for pillow_heif on arm32v7, compiling pillow_heif may take a long time in the next step ****"
+    apk add --no-cache \
+        python3-dev \
+        libtool \
+        git \
+        gcc \
+        m4 \
+        perl \
+        alpine-sdk \
+        cmake
+fi
 
-python3 -m pip install -U pip
-
-
-python3 -m pip install pillow_heif
-
-pip install hexhamming
-
-echo "**** Installing pywavelets if architecture is not ARM ****"
-
-arch=$(arch | sed s/x86_64/amd64/) && \
-    python3 -m pip install pywavelets
+echo "**** Installing pillow_heif, hexhamming and pywavelets ****"
+python3 -m pip install -U pip wheel setuptools
+python3 -m pip install ${PIP_ARGS} pillow_heif hexhamming pywavelets