[bug] Fix installation error in Docker

[wildsurfer]

Possible solution: Automattic/node-canvas#1511

Step 5/6 : RUN npm install
 ---> Running in d7e0a75b2af2

> canvas@2.6.1 install /app/node_modules/canvas
> node-pre-gyp install --fallback-to-build

node-pre-gyp WARN Using needle for node-pre-gyp https download 
node-pre-gyp WARN Tried to download(404): https://github.com/node-gfx/node-canvas-prebuilt/releases/download/v2.6.1/canvas-v2.6.1-node-v72-linux-musl-x64.tar.gz 
node-pre-gyp WARN Pre-built binaries not found for canvas@2.6.1 and node@12.18.3 (node-v72 ABI, musl) (falling back to source compile with node-gyp) 
make: Entering directory '/app/node_modules/canvas/build'
  SOLINK_MODULE(target) Release/obj.target/canvas-postbuild.node
  COPY Release/canvas-postbuild.node
  CXX(target) Release/obj.target/canvas/src/backend/Backend.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/backend/Backend.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/backend/ImageBackend.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/backend/ImageBackend.h:3,
                 from ../src/backend/ImageBackend.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/backend/PdfBackend.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/backend/PdfBackend.h:3,
                 from ../src/backend/PdfBackend.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/backend/SvgBackend.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/backend/SvgBackend.h:3,
                 from ../src/backend/SvgBackend.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/bmp/BMPParser.o
  CXX(target) Release/obj.target/canvas/src/Backends.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/Backends.h:3,
                 from ../src/Backends.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/Canvas.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/Canvas.h:5,
                 from ../src/Canvas.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
../src/Canvas.cc: In static member function 'static Nan::NAN_METHOD_RETURN_TYPE Canvas::ToBuffer(Nan::NAN_METHOD_ARGS_TYPE)':
../src/Canvas.cc:415:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare]
     if (canvas->nBytes() > node::Buffer::kMaxLength) {
         ~~~~~~~~~~~~~~~~~^~~~~~
../src/Canvas.cc:479:79: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     uv_queue_work(uv_default_loop(), req, ToPngBufferAsync, (uv_after_work_cb)ToBufferAsyncAfter);
                                                                               ^~~~~~~~~~~~~~~~~~
../src/Canvas.cc:520:80: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     uv_queue_work(uv_default_loop(), req, ToJpegBufferAsync, (uv_after_work_cb)ToBufferAsyncAfter);
                                                                                ^~~~~~~~~~~~~~~~~~
  CXX(target) Release/obj.target/canvas/src/CanvasGradient.o
In file included from ../src/CanvasGradient.h:5,
                 from ../src/CanvasGradient.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/CanvasPattern.o
In file included from ../src/CanvasPattern.h:6,
                 from ../src/CanvasPattern.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/CanvasRenderingContext2d.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/Canvas.h:5,
                 from ../src/CanvasRenderingContext2d.h:6,
                 from ../src/CanvasRenderingContext2d.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/closure.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/Canvas.h:5,
                 from ../src/closure.h:5,
                 from ../src/closure.cc:1:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/color.o
  CXX(target) Release/obj.target/canvas/src/Image.o
In file included from ../src/Image.h:8,
                 from ../src/Image.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/ImageData.o
In file included from ../src/ImageData.h:5,
                 from ../src/ImageData.cc:3:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
  CXX(target) Release/obj.target/canvas/src/init.o
In file included from ../src/backend/Backend.h:6,
                 from ../src/Backends.h:3,
                 from ../src/init.cc:17:
../../nan/nan.h: In function 'void Nan::AsyncQueueWorker(Nan::AsyncWorker*)':
../../nan/nan.h:2294:62: warning: cast between incompatible function types from 'void (*)(uv_work_t*)' {aka 'void (*)(uv_work_s*)'} to 'uv_after_work_cb' {aka 'void (*)(uv_work_s*, int)'} [-Wcast-function-type]
     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
                                                              ^
In file included from ../../nan/nan.h:56,
                 from ../src/backend/Backend.h:6,
                 from ../src/Backends.h:3,
                 from ../src/init.cc:17:
../src/init.cc: At global scope:
/root/.cache/node-gyp/12.18.3/include/node/node.h:608:43: warning: cast between incompatible function types from 'void (*)(Nan::ADDON_REGISTER_FUNCTION_ARGS_TYPE)' {aka 'void (*)(v8::Local<v8::Object>)'} to 'node::addon_register_func' {aka 'void (*)(v8::Local<v8::Object>, v8::Local<v8::Value>, void*)'} [-Wcast-function-type]
       (node::addon_register_func) (regfunc),                          \
                                           ^
/root/.cache/node-gyp/12.18.3/include/node/node.h:642:3: note: in expansion of macro 'NODE_MODULE_X'
   NODE_MODULE_X(modname, regfunc, NULL, 0)  // NOLINT (readability/null_usage)
   ^~~~~~~~~~~~~
../src/init.cc:88:1: note: in expansion of macro 'NODE_MODULE'
 NODE_MODULE(canvas, init);
 ^~~~~~~~~~~
  CXX(target) Release/obj.target/canvas/src/register_font.o
  SOLINK_MODULE(target) Release/obj.target/canvas.node
  COPY Release/canvas.node
make: Leaving directory '/app/node_modules/canvas/build'
npm WARN telegram-bot@2.0.1 No repository field.

[wildsurfer]

Easy fix seems to be to replace alpine with Debian

FROM node:14.10.0-stretch-slim

WORKDIR /app

COPY . /app

RUN npm install

CMD ["node", "bot.js"]

[perekopskyi]

fixed #23